SlideShare uma empresa Scribd logo
1 de 70
INDIAN DENTAL ACADEMY
     Leader in Continuing Dental Education
        www.indiandentalacademy.com
www.indiandentalacademy.com
POST AND CORE
                    CONTENTS

Introduction
History
Treatment planning for post and core
Classification of posts
Factors affecting selection of post
Principles of tooth preparation for post and core
The ferrule effect
Core and core materials
Techniques of fabrication
Recent advances
conclusion

            www.indiandentalacademy.com
INTRODUCTION

Endodontic treatment      good prognosis

Loss of considerable amount of tooth structure

Caries

Endodontic treatment &/or previous restoration


Retention of subsequent restoration problematic

Increases    # function

Restoring teeth complex procedures




             www.indiandentalacademy.com
HISTORY

   Methods of restoring pulp less teeth for more than 250yrs.
1728-Pierre Fouchard -roots of maxillary anteriors teeth

Pivot teeth –Mastic “Tenons”
              Replacement crowns


1800-Dubois de chamante
-porcelain teeth-pivot teeth

1839-Chapin Harris - The Dental Art –
pivoting of the artificial crowns to natural roots
      “The best that can be employed”




                 www.indiandentalacademy.com
1849-Sir John Tomes - Dental philosophy and surgery
           principles of fabricating posts




1878-C.M.Richmond-porcelain faced dowel crowns
       Pivot/post with porcelain facing



            www.indiandentalacademy.com
1880-U.S. seasoned wood as pivots



19th century-Davis crown -gold casting




1960-carbon fiber post

1968-Mare Reymond-
      DT Light transmitting post


1989- modification of carbon fiber post


1996-Meyeberg - Zirconium posts


              www.indiandentalacademy.com
TREATMENT PLANNING

Good apical seal

No apical sensitivity

No sensitivity to pressure

No active inflammation

No exudate

No sinus




             www.indiandentalacademy.com
Changes accompanying root canal therapy

    Loss of tooth structure

    Altered physical characteristics

    Altered esthetics

Amount of remaining tooth structure


Anatomic position of the tooth


Functional load on the tooth


Esthetic requirements for the tooth



            www.indiandentalacademy.com
Why post and core?
         post strengthen the root??




     Retain the core buildup material
                       &
     Reinforce coronal tooth structure

Replace the missing portion and to
protect the remaining tooth structure

Basically consists of

•Post
•Core and
•Final restoration


             www.indiandentalacademy.com
POST AND CORE

POST(DOWEL):
  The dowel is a post or other relatively rigid restorative material
 placed in the root of a non vital tooth”

CORE:
The core consists of restorative material placed in the
coronal area of a tooth
         It replaces the carious, fractured or otherwise missing
coronal structure and retains the final restoration/crown.

CLASSIFICATION OF POST(DOWEL):

Categorized by number of different ways

Broadly categorized into:

 Custom cast posts and
 Preformed post systems
              www.indiandentalacademy.com
Preformed dowel system can be further categorized based
on their geometric shape

Tapered posts
Parallel posts


further classified by their surface configuration as

Smooth posts
Serrated posts
Threaded posts

Based on mode of retention of the post to the canal portion

Active posts                  Passive posts

v-lock post                   c-post          snow post
flexi-post                    cosmopost       aestheti post
                               para pos
               www.indiandentalacademy.com
Based on material

Non metallic posts

C-post
Aestheti Plus post
Cera post

Metallic posts

Dentatus post
Root post
Para post




             www.indiandentalacademy.com
Ideal properties of a post

.Maximum protection

.Adequate retention with in the root

.Maximum retention of the core and crown

.Maximum protection of the crown margin/cement
seal

.Pleasing esthetics when indicated

.High radiographic visibility

.Retrievability

.Biocompatibility



              www.indiandentalacademy.com
Factors which effect the post selection

post length

post shape

post diameter

Surface configuration

post material/composition

Luting agent




               www.indiandentalacademy.com
POST LENGTH

  Equal to the cervico incisal or cervico occlusal length of crown
  Longer than the crown
  One and one third the crown length
  Half the root length
  Two third the root length
  Four fifth the root length
  Half way between crestal bone and root apex
  As long as possible without disturbing the apical seal

 4.00mm safety zone is required for apical seal

• 2-3mm ---definite leakage
 4 mm-- adequate—Nixon et al
 5mm—Apical seal---Mattison et al




           www.indiandentalacademy.com
Three quarters the length of root in long rooted teeth

In average length teeth-retain apical 5.00mm

Should extend at least 4mm apical to bone crest

Molar posts not be extended more than 7mm




           www.indiandentalacademy.com
POST SHAPE

Parallel sided
 parallel sided posts - removal of more tooth structure
 less chance of root fracture
 Parallel design improves post retention and force distribution.
                                                    distribution
 More retentive than tapered forms

Tapered form

Produce wedging effect - significant lateral forces
                        vertical root fracture
 Requires less removal of tooth structure

Limited to use in tapered root systems




               www.indiandentalacademy.com
POST DIAMETER

Large diameter post - higher retention
                                           -Standlee, Kvist

Increase in diameter - no significant increase in retention
                                    -Kurer,Harison

Length is most important factor in post retention
              and diameter is only a secondary factor
                                          - Krupp et al

Increase in post diameter causes higher stress in the tooth
                                         — Mattison

Potential for root fracture increases by SIX times/mm of
diameter


             www.indiandentalacademy.com
Teeth with thicker diameter (1.8mm) post fractured more
easily than with a thinner (1.3mm)
                                  --Trabert et al

Photoelastic studies - internal stresses are less with thinner posts

FEM studies have failed to demonstrate increase in stress
with increase in diameter of the posts

Recent FEM analysis and fractographic analysis

                                 —Dent. Trauma—2004
Tensile loading—strains/deformations in inner dentin and

stress at the outer dentin surface

             www.indiandentalacademy.com
To avoid root perforation by excessive preparation,
safe instrument diameters are proposed

                     Tilk et al        Shillingburg et al
Small teeth         0.6-0.7mm          0.7mm
Larger diameter     1.00mm             1.7mm
Remaining           0.8-0.9mm          1.3mm


small diameter root—0.6-0.7mm

large diameter root---1-1.2mm

in molars-should not exceed more than 7mm in length
 even in thicker roots.




              www.indiandentalacademy.com
SURFACE CONFIGURATION

Smooth surface - least retentive

Serrated surface - more retentive


Threaded surface - most retentive
                   intended to engage canal walls
                   significant stress in the tooth

Modifications of surface




              www.indiandentalacademy.com
LUTING AGENTS

Resin cements

Higher retention
Lower microleakage
protection by strengthening of root


Superiority of one cement over another is not clear

Bonded resin cements - strengthening effects in roots
                       for some period of time

Technique sensitive
Contamination
 Delivery of the etchent/ bonding agent
When using resin cements use dual cure resin cement


               www.indiandentalacademy.com
POST MATERIALS

functional stress, resist corrosion and biocompatible
           stress

– adequate stiffness
- high yield strength
- favorable fatigue properties to function adequately


Allergy and sensitivity with Ni-Cr alloy

Titanium preformed post-carbon fiber post

Ceramic posts

Poly ethylene woven posts




              www.indiandentalacademy.com
PRINCIPLES OF TOOTH PREPARATION

Many of the principles relating to the tooth preparation

apply equally to the endodotically treated teeth

Additional concepts to avoid failure

Conservation of tooth structure
Retention form
Resistance form




              www.indiandentalacademy.com
Conservation of tooth structure

ROOT CANAL

Remove only minimal tooth structure from the canal


Over enlargement lead to weakening or perforation
     chances of splitting while cementation or functioning

Canal be enlarged to enable the post
                      to fit snugly for strength & retention




             www.indiandentalacademy.com
Crown

The amount of remaining tooth structure
      is the single most important predictor of clinical success

Caries, previous restoration and
endodontic cavity preparation      considerable loss of tooth structure

Further reduction to accommodate the crown and
to remove undercuts
                          little coronal dentin

As much coronal tooth structure should be conserved
 to reduce the stress concentration at the gingival margin

 Extension of the axial wall of the crown apical to
 the missing tooth structure provides as a ferrule - hold the
remaining tooth structure preventing root fracture during function




               www.indiandentalacademy.com
RETENTION FORM


Dislodgement of post retained anterior crown
is due to inadequate retention form of the prepared post

Retention of the post is mainly affected by –

The preparation geometry

Post length

Post diameter

Surface texture

The luting agent

              www.indiandentalacademy.com
PREPARATION GEOMETRY

Anterior teeth

Some canals have nearly circular cross section - prepared to give

parallel walls or a minimum taper allowing the use of preformed

   post of respective configuration

Retention is proportional to the       surface area




             www.indiandentalacademy.com
Posterior teeth

Relatively long post with circular cross section should be
  avoided

Relatively short posts in divergent canals     better retention

3mm or more amount of tooth structure is present --
           preparation of the root canal is not necessary

Widest canals are selected for post placement in posterior
  teeth




              www.indiandentalacademy.com
RESISTANCE FORM

An excessive internal preparation of root
weakens the root and possibility of failure in restoration
Post design should distribute stresses as evenly as possible




FACTORS AFFECTING RESISTANCE

1. Crown bevel-
   Part of the crown extends past post & core margin - extends
                   on natural tooth structure

Effective       tooth 360 degrees and
               at least 1.5mm on to tooth structure below margin


             www.indiandentalacademy.com
2. Vertical remaining tooth structure-

3. Anti rotational features-
Oblong canal space provides resistance to rotational forces
When coronal dentin is lost, anti rotation element can be
   placed in the bulkiest aspect of teeth




               www.indiandentalacademy.com
Crown& crown preparation

Minimum of 2mm dentin axial wall height

Parallel axial walls

Metal should encircle the tooth

Margins on solid tooth structure

Not invade attachment apparatus




            www.indiandentalacademy.com
Greatest stress concentration in the tooth is found at the
shoulder,

inter proximally and at the apex


dentin should be preserved in these areas if possible

Stresses are reduced as the post length increases


Parallel sided posts distribute stresses more evenly
Sharp angles should be avoided         high stress during loading

High stress will be generated when cementing parallel sided posts
which don’t have escape vent




              www.indiandentalacademy.com
THE FERRULE EFFECT

                 FERRULE is a metal ring or cap put around the end
of a tool, cane to provide added strength
                                               OR
      Is a vertical band of tooth structure at the gingival aspect of
a crown preparation

Primarily -- resistance form and enhances longevity

Circumferential contra bevel reinforces the coronal aspect
Positive occlusal seat - acts as a anti rotational device

In teeth with little or no clinical crown remaining
 large contra bevel on root surface with finish of crown preparation
acts as ferrule

 Ferrule must be on tooth structure and not invade the
attachment apparatus

              www.indiandentalacademy.com
Types of ferrule
                                    &

Core ferrule and
Crown ferrule

Crown ferrule > effective - core ferrule

Ferrule length is more important than the post length
 in increasing # of tooth.
                                           --- Int J P 1999
2mm of dentin ferrule of crown more effectively
enhances # resistance of custom cast post and core.
                                          -----JPD2003
Even presence of 1mm of ferrule provides twice the amount
of resistance to fracture
             www.indiandentalacademy.com
CORE AND CORE MATERIALS



The core is anchored to the tooth by a direct connection
 of the core into canal or through a post


Tooth + post & core      mechanical, chemical/adhesive
The remaining tooth structure can be altered to
 enhance retention of the core or to provide resistance
to core rotation under function


The irregular nature -residual coronal tooth structure,

morphology of the pulp chamber & canal orifices
                   additional alterations


           www.indiandentalacademy.com
Desirable properties of core material include

•Dimensional stability

•Ease of manipulation

•Natural tooth color

•Rapid and hard setting > immediate crown preparation

•High compressive and tensile strength

•High modulus of elasticity and fracture toughness

•Low plastic deformation

•Bio compatibility

•Cariostatic and low cost
             www.indiandentalacademy.com
CAST CORE

A cast core forming a one piece post and core
traditional and proven method of restoring a tooth

Advantages

Core does not depend on mechanical means
 Can be retrieved for endodontic retreatment
Non corrosive when cast with noble metal

Disadvantages

The number of appointments required are more
Laboratory expenses and time required for fabrication
Technique sensitive in the laboratory phase




             www.indiandentalacademy.com
COMPOSITE RESIN CORE

Advantages

Ease of manipulation
Less time consuming and
A additional retention and anti rotation features easily achieved


Disadvantages

Polymerization shrinkage & contraction- marginal discrepancy & micro cracks
Difference in co-efficient of thermal expansion     micro leakage
At least 2mm coronal tooth structure - for build up
Technique sensitivity
Retention of core with zirconium posts




                www.indiandentalacademy.com
GLASS IONOMER/ METAL MODOFIED GIC CORE

In teeth with significant amount of dentin
remaining and additional retention is available

Main advantage is the anticariogenic potential

High solubility and moisture sensitivity
Limited for building up of small area
Low retention to preformed dowels
Low strength and fracture toughness
Technique sensitivity

Usually not recommended - low strength
                                             --JPD-1982




               www.indiandentalacademy.com
RMGIC CORE:

Improved properties conventional GIC
Bond strength close to that of bonded composite restoration
Minimal microleakage

Disadvantage

Dimensional instability in the presence of moisture > expansion

Can     fracture/ failure of the ceramic crowns
                                             -IJP-1998




               www.indiandentalacademy.com
CORONAL RADICULAR CORE

Used as an alternative - traditional cast post and core

This consists of core that replaces the coronal tooth structure
extends 2-4mm into coronal portion of root canal

Utilizes conventional restorative materials-amalgam,
composite resins or modified GIC

Provides adequate strength and retention as a core
In combination with bonding - gingival discoloration, provides
protection against coronal leakage




              www.indiandentalacademy.com
TECHNIQUES FOR POST AND CORE FABRICATION

Tooth preparation for post and core can be accomplished in
      3 steps-

1.removal of root canal filling material

2.enlargement of the canal

3.preparation of the coronal tooth structure


     post and core fabrication is best done
after the coronal preparation of the tooth structure
Amount of tooth preparation to be done
depends on the final restoration it in turn
affects the extent of core fabrication


              www.indiandentalacademy.com
REMOVAL OF ENDODONTIC FILLING MATERIAL

  The amount of gutta percha removal is dictated by

The desired post length, type, bone height and
the root morphology

Warmed endodontic plugger

rotary instrument

Rotary instrumentation > straying from the canal and cutting the
excess radicular dentin - weakening / result in lateral perforation




              www.indiandentalacademy.com
ENLAREMENT OF THE ROOT CANAL SPACE

The Peeso reamers & Gates Glidden drill

Available in sizes 0.7-1.7mm & 0.6-1.5mm dia
 in graduated sizes from 1-6, non cutting tips

canal preparation - keyway or a groove with
 bur no. 170 in the bulkiest portion of Canal to
              a depth of diameter of the bur and
  length of bur




          www.indiandentalacademy.com
PHILOSOPHIES OF POST SPACE PREPARATION

Conservationist –
               narrowest diameter for certain post length


                                         Pilo & Tamse



Proportionists -
               diameter should not be > 1/3 root diameter

                                           Stern & Harshfield

Preservationists –
           at least 1mm of sound dentin around entire post

           www.indiandentalacademy.com
PROCEDURE


Begin removal of gutta percha with heated condenser

Measure as large size Peeso reamer as will fit the
obturated space against a radiograph leaving apical 5mm of filling
 with reference to a stable land mark

Once gutta percha is removed check the accuracy

Enlarge the canal to a desired size - preserve a minimum of 1mm
around the post at mid root and beyond and should not be one
third the diameter of the root at the CEJ




             www.indiandentalacademy.com
PREPARATION OF THE CORONAL TOOTH STRUCTURE




Prepare the remaining tooth structure adequately
for the extra coronal restoration

All internal and external under cuts are removed

Any unsupported tooth structure if present should be removed

The remaining portion is prepared perpendicular to
 the post which will create a positive stop while cementing the
post
             www.indiandentalacademy.com
www.indiandentalacademy.com
PREFABRICATED POSTS

Enlarge the canal one to two sizes with a drill or reamer
  smaller than the drill prescribed by the manufacturer

A wide range of prefabricated posts
    shapes and sizes

parallel sided prefabricated are recommended for conservatively
 prepared root canals with roots of circular cross section.

Excessively prepared canals managed with custom post.
 however situation should be evaluated on individual basis




             www.indiandentalacademy.com
Maximum recommended dowel size with outline of
  root at mid root portion with root outline
and post diameters.




Outline of
Root at mid
root area




                                              and
                                            post diameters
              www.indiandentalacademy.com
CUSTOM CAST POST AND CORE
FABRICATION TECHNIQUE

Direct or indirect technique

A direct technique using inlay wax, auto polymerizing or light
polymerizing resin usually for single teeth restoration

 Indirect technique – multiple teeth or tooth with multiple canals

The post/pin should extend the full length of prepared canal
soft wax is added or a brush bead technique is used to add resin




              www.indiandentalacademy.com
Deficiency or excess is corrected and coronal part
is shaped




The finish line prepared should be on tooth and
not on the core

Remove the pattern and proceed with the
laboratory steps




              www.indiandentalacademy.com
Indirect technique

impression is made with a elastomeric impression material with
adequate reinforcement to prevent distortion

the impression material can either be placed in the canal with a
lentulo spiral or can be injected into the post Space

impression is removed , evaluated and working cast prepared
post pattern prepared and other procedures carried out




              www.indiandentalacademy.com
Direct indirect technique —pick up casting or core




                      Miscellaneous
                      Dowel inlays and retrofit posts




             www.indiandentalacademy.com
PROVISIONAL RESTRORATIONS IN
POST AND CORE FABRICATION


A provisional restoration plays an important role
in the successful restoration of a tooth

FUNCTIONS

•Esthetics
•Protection of the tooth from further damage
•Prevents migration of adjacent teeth
•provides occlusal function




              www.indiandentalacademy.com
crown formers and posts can be used in various combinations-


•Polycarbonate crowns relined with acrylic

•Plastic posts relined with acrylic resin

•Silicone post reinforced with a paper clip or orthodontic wire

•Braided SS wire with acrylic resin crown

•SS crowns with reinforcement

•Reamers or files reinforced with acrylic




               www.indiandentalacademy.com
RECENT ADVANCES

Prefabricated posts- increasingly popular

Ease of placement and
Crown preparation

FIBER POSTS


CARBON FIBER COMPOSITE POSTS-

More flexible than metal posts and
have same modulus of elasticity of dentin approximately
Even distribution of forces when bonded with resins

Biocompatible and non cytotoxic
Less root fracture
Have the highest strength among the fiber posts

             www.indiandentalacademy.com
Disadvantages

Dark in color
Radiolucent in appearance
Reduction of strength after placement

Cause stress concentration at the margins of the restorations
                                     --JDR-1999
Fibers were unidirectional
Multidirectional arrangement has improved their longevity

Dark color is over come- coating the post with zirconium
                                          - aestheti plus post

Recent versions are white and are relatively easier to remove by
boring the middle of the post with ultrasonic or rotary instrument




             www.indiandentalacademy.com
carbonite post

available in 3 reamer sizes as 2, 3, & 4 -- 1.20, 1.35 &1.50




                               Mira post




             www.indiandentalacademy.com
Bond between tooth, core and post - adhesive technique

parapost,glassix, fiberkor, lucent anchor, Mirafit white - glass
  fiber posts
luminex, light post—light transmitting posts

Aestheti plus, DT light post –quartz fiber post


Para post white fiber                       Aestheti plus – A 2




              www.indiandentalacademy.com
FRC POSTEC
Glass fiber reinforced Composite post
Elasticity dentin and dentin like shade

size 1 and 3 with corresponding
reamer as white and Red color

Polymer matrix of urethane dimethacrylate & glycol dimethacrylate
  yitterbium trifluoride & dispersed si. Dioxide

Impression post of Cr-Ni Size 1-15mm, 0.8mm         size 2 -18mm, 1m

Size 1- 0.7mm
Size 3- 0.9mm

                                             Direct or indirect tech.




               www.indiandentalacademy.com
CERAMIC AND ZIRCONIUM POSTS


 ceramic and zirconium posts - translucent
Esthetically superior to metal posts and for all ceramic crowns
                                        ---JPD2000
Its impossible to grind away the posts
Zirconium posts are not etchable
                                          ---Int sym-1998
Retention of the core


ceramic and zirconium posts #retrievable and
they should be avoided
                                    –AAE-2004

Weaker than the metal posts
Thicker posts - Require additional removal of root dentin


             www.indiandentalacademy.com
Direct method

Indirect method - Reinforcement




Cosmo post, snow post
                www.indiandentalacademy.com
METAL POSTS

World post

supplied with primary reamer and secondary drill


secondary drill- tier-stabilizes & bottoming out


Length & head position




                             Peeso    Gates   Primary reamer
                               1       2            0
                               3       4            1
                               4       5            2
                               5       6            3
               www.indiandentalacademy.com
Flexi-post               Flexi-flange post

Ss, titanium alloy
Split shank design




             Access post
                                            Root post -Ti post




              www.indiandentalacademy.com
Para post xp- ss, Ti

Para post xh – Ti


Para post xt – Ti


Para post xp-casting kit



PRO POST
Y-2-0.94mm
R-3-1.20mm
B-4-1.45mm
G-5-1.70mm
Surface of post- acid etched

          www.indiandentalacademy.com
Cytcok Ni Ti post          Dentatus post




            www.indiandentalacademy.com
CUSTOM MADE VS PRE FABRICATED POST




The canal is prepared to fit the prefabricated post,
   but custom made post is made to fit the tooth

Custom made cast post better adaptation
                          to canal configuration

Do not require auxiliary means of retention routinely

Gives the best results when change in the path
of insertion or crown angulation is required

              www.indiandentalacademy.com
CONCLUSION

Prefabricated posts - popular + ease of placement and
+ allow restoring the tooth for immediate crown preparation

It is possible to achieve high level of clinical success
with most of the current available materials

 Further understanding and modification currently available
 material with their physical and mechanical properties
 will improve their performance.



               www.indiandentalacademy.com

Mais conteúdo relacionado

Mais procurados

Provisional restoration in fixed partial denture
Provisional restoration in fixed partial dentureProvisional restoration in fixed partial denture
Provisional restoration in fixed partial denturebhuvanesh4668
 
TEMPORIZATION IN PROSTHODONTICS
TEMPORIZATION IN PROSTHODONTICSTEMPORIZATION IN PROSTHODONTICS
TEMPORIZATION IN PROSTHODONTICSDrPrakashNidawani
 
Cast post - Restoration of endodontically treated teeth
Cast post - Restoration of endodontically treated teethCast post - Restoration of endodontically treated teeth
Cast post - Restoration of endodontically treated teethYogha Padhma Asokan
 
Indications contraindications and classification of bridges/endodontic courses
Indications contraindications and classification of bridges/endodontic coursesIndications contraindications and classification of bridges/endodontic courses
Indications contraindications and classification of bridges/endodontic coursesIndian dental academy
 
Wax patterns fabrication for fixed partial dentures
Wax patterns fabrication for fixed partial denturesWax patterns fabrication for fixed partial dentures
Wax patterns fabrication for fixed partial denturesShebin Abraham
 
Rationale of post endodontic restoration /certified fixed orthodontic cours...
Rationale of post endodontic restoration   /certified fixed orthodontic cours...Rationale of post endodontic restoration   /certified fixed orthodontic cours...
Rationale of post endodontic restoration /certified fixed orthodontic cours...Indian dental academy
 
RECENT ADVANCES IN REMOVABLE PARTIAL DENTURES
RECENT ADVANCES  IN REMOVABLE PARTIAL DENTURESRECENT ADVANCES  IN REMOVABLE PARTIAL DENTURES
RECENT ADVANCES IN REMOVABLE PARTIAL DENTURESNAMITHA ANAND
 
Custom made post & Core in endodontics
Custom made post & Core in endodonticsCustom made post & Core in endodontics
Custom made post & Core in endodonticsDr. Arpit Viradiya
 
Retraction cords
Retraction cordsRetraction cords
Retraction cordsAh A
 
Full Mouth Rehabilitation
Full Mouth RehabilitationFull Mouth Rehabilitation
Full Mouth RehabilitationSelf employed
 
Post retained endodontic restorations
Post retained endodontic restorationsPost retained endodontic restorations
Post retained endodontic restorationsIAU Dent
 
Posterior Teeth Selection in Complete Denture
Posterior Teeth Selection in Complete DenturePosterior Teeth Selection in Complete Denture
Posterior Teeth Selection in Complete DentureDr. Prathamesh Fulsundar
 
Post endodontic restoration/ orthodontic continuing education
Post  endodontic restoration/ orthodontic continuing educationPost  endodontic restoration/ orthodontic continuing education
Post endodontic restoration/ orthodontic continuing educationIndian dental academy
 
Advances in Materials in Fixed Partial Dentures
Advances in Materials in Fixed Partial Dentures Advances in Materials in Fixed Partial Dentures
Advances in Materials in Fixed Partial Dentures Sivaranjani Gali
 
Gingival Retraction
Gingival Retraction Gingival Retraction
Gingival Retraction Harshil Modi
 
Precision attachments
Precision attachmentsPrecision attachments
Precision attachmentsJoel Koshy
 
Diagnosis and treatment planning in cd
Diagnosis and treatment planning in  cdDiagnosis and treatment planning in  cd
Diagnosis and treatment planning in cdIndian dental academy
 
Impression techniques in removable partial dentures
Impression techniques in removable partial denturesImpression techniques in removable partial dentures
Impression techniques in removable partial denturesAnil Goud
 

Mais procurados (20)

Provisional restoration in fixed partial denture
Provisional restoration in fixed partial dentureProvisional restoration in fixed partial denture
Provisional restoration in fixed partial denture
 
TEMPORIZATION IN PROSTHODONTICS
TEMPORIZATION IN PROSTHODONTICSTEMPORIZATION IN PROSTHODONTICS
TEMPORIZATION IN PROSTHODONTICS
 
Cast post - Restoration of endodontically treated teeth
Cast post - Restoration of endodontically treated teethCast post - Restoration of endodontically treated teeth
Cast post - Restoration of endodontically treated teeth
 
Indications contraindications and classification of bridges/endodontic courses
Indications contraindications and classification of bridges/endodontic coursesIndications contraindications and classification of bridges/endodontic courses
Indications contraindications and classification of bridges/endodontic courses
 
Wax patterns fabrication for fixed partial dentures
Wax patterns fabrication for fixed partial denturesWax patterns fabrication for fixed partial dentures
Wax patterns fabrication for fixed partial dentures
 
Rationale of post endodontic restoration /certified fixed orthodontic cours...
Rationale of post endodontic restoration   /certified fixed orthodontic cours...Rationale of post endodontic restoration   /certified fixed orthodontic cours...
Rationale of post endodontic restoration /certified fixed orthodontic cours...
 
Failures in FPD
Failures in FPDFailures in FPD
Failures in FPD
 
RECENT ADVANCES IN REMOVABLE PARTIAL DENTURES
RECENT ADVANCES  IN REMOVABLE PARTIAL DENTURESRECENT ADVANCES  IN REMOVABLE PARTIAL DENTURES
RECENT ADVANCES IN REMOVABLE PARTIAL DENTURES
 
Custom made post & Core in endodontics
Custom made post & Core in endodonticsCustom made post & Core in endodontics
Custom made post & Core in endodontics
 
Retraction cords
Retraction cordsRetraction cords
Retraction cords
 
Ferrule 3
Ferrule 3Ferrule 3
Ferrule 3
 
Full Mouth Rehabilitation
Full Mouth RehabilitationFull Mouth Rehabilitation
Full Mouth Rehabilitation
 
Post retained endodontic restorations
Post retained endodontic restorationsPost retained endodontic restorations
Post retained endodontic restorations
 
Posterior Teeth Selection in Complete Denture
Posterior Teeth Selection in Complete DenturePosterior Teeth Selection in Complete Denture
Posterior Teeth Selection in Complete Denture
 
Post endodontic restoration/ orthodontic continuing education
Post  endodontic restoration/ orthodontic continuing educationPost  endodontic restoration/ orthodontic continuing education
Post endodontic restoration/ orthodontic continuing education
 
Advances in Materials in Fixed Partial Dentures
Advances in Materials in Fixed Partial Dentures Advances in Materials in Fixed Partial Dentures
Advances in Materials in Fixed Partial Dentures
 
Gingival Retraction
Gingival Retraction Gingival Retraction
Gingival Retraction
 
Precision attachments
Precision attachmentsPrecision attachments
Precision attachments
 
Diagnosis and treatment planning in cd
Diagnosis and treatment planning in  cdDiagnosis and treatment planning in  cd
Diagnosis and treatment planning in cd
 
Impression techniques in removable partial dentures
Impression techniques in removable partial denturesImpression techniques in removable partial dentures
Impression techniques in removable partial dentures
 

Semelhante a Post & core /certified fixed orthodontic courses by Indian dental academy

Esthetic post systems /certified fixed orthodontic courses by Indian dental a...
Esthetic post systems /certified fixed orthodontic courses by Indian dental a...Esthetic post systems /certified fixed orthodontic courses by Indian dental a...
Esthetic post systems /certified fixed orthodontic courses by Indian dental a...Indian dental academy
 
Managment of endodontic teeth / endodontic courses
Managment of endodontic teeth / endodontic coursesManagment of endodontic teeth / endodontic courses
Managment of endodontic teeth / endodontic coursesIndian dental academy
 
Post & core in dentistry / orthodontic continuing education
Post & core in dentistry / orthodontic continuing educationPost & core in dentistry / orthodontic continuing education
Post & core in dentistry / orthodontic continuing educationIndian dental academy
 
Post & core final/ dental implant courses
Post & core final/ dental implant coursesPost & core final/ dental implant courses
Post & core final/ dental implant coursesIndian dental academy
 
Post endodontic restoration /certified fixed orthodontic courses by Indian de...
Post endodontic restoration /certified fixed orthodontic courses by Indian de...Post endodontic restoration /certified fixed orthodontic courses by Indian de...
Post endodontic restoration /certified fixed orthodontic courses by Indian de...Indian dental academy
 
Restoration of endodontically treated tooth/prosthodontic courses
Restoration of endodontically treated tooth/prosthodontic coursesRestoration of endodontically treated tooth/prosthodontic courses
Restoration of endodontically treated tooth/prosthodontic coursesIndian dental academy
 
POST ENDODONTIC RESTORATION(Dr SAICHARAN)
POST ENDODONTIC RESTORATION(Dr SAICHARAN)POST ENDODONTIC RESTORATION(Dr SAICHARAN)
POST ENDODONTIC RESTORATION(Dr SAICHARAN)MINDS MAHE
 
Restoration of endodontically treated tooth /certified fixed orthodontic cour...
Restoration of endodontically treated tooth /certified fixed orthodontic cour...Restoration of endodontically treated tooth /certified fixed orthodontic cour...
Restoration of endodontically treated tooth /certified fixed orthodontic cour...Indian dental academy
 
Restoration of endodontically treated tooth/ academy general dentistry
Restoration of endodontically treated tooth/ academy general dentistryRestoration of endodontically treated tooth/ academy general dentistry
Restoration of endodontically treated tooth/ academy general dentistryIndian dental academy
 
Principles of tooth preparation /certified fixed orthodontic courses by In...
Principles of tooth preparation    /certified fixed orthodontic courses by In...Principles of tooth preparation    /certified fixed orthodontic courses by In...
Principles of tooth preparation /certified fixed orthodontic courses by In...Indian dental academy
 
Esthetic post systems/ dentistry site
Esthetic post systems/ dentistry siteEsthetic post systems/ dentistry site
Esthetic post systems/ dentistry siteIndian dental academy
 
Esthetic post systems/ dental crown & bridge courses
Esthetic post systems/ dental crown & bridge coursesEsthetic post systems/ dental crown & bridge courses
Esthetic post systems/ dental crown & bridge coursesIndian dental academy
 
Restoration of the endodontically treated tooth
Restoration of the endodontically treated tooth Restoration of the endodontically treated tooth
Restoration of the endodontically treated tooth Azheen Mohamad Kharib
 
Decision Making in Restoration of Endodontically-Treated Teeth
Decision Making in Restoration of Endodontically-Treated TeethDecision Making in Restoration of Endodontically-Treated Teeth
Decision Making in Restoration of Endodontically-Treated TeethMohamed Zeglam
 
Restoration of endodontically treated teeth
Restoration of endodontically treated teethRestoration of endodontically treated teeth
Restoration of endodontically treated teethDr. Md. Shahriar Rubayat
 
Endodontically treated teeth ppt - a detail
Endodontically treated teeth ppt - a detailEndodontically treated teeth ppt - a detail
Endodontically treated teeth ppt - a detailnitinsippy
 
Advanced treatment of post & core - A presentation
Advanced treatment of post & core - A presentationAdvanced treatment of post & core - A presentation
Advanced treatment of post & core - A presentationnitinsippy
 

Semelhante a Post & core /certified fixed orthodontic courses by Indian dental academy (20)

POST & CORE.ppt
POST & CORE.pptPOST & CORE.ppt
POST & CORE.ppt
 
Esthetic post systems /certified fixed orthodontic courses by Indian dental a...
Esthetic post systems /certified fixed orthodontic courses by Indian dental a...Esthetic post systems /certified fixed orthodontic courses by Indian dental a...
Esthetic post systems /certified fixed orthodontic courses by Indian dental a...
 
Managment of endodontic teeth / endodontic courses
Managment of endodontic teeth / endodontic coursesManagment of endodontic teeth / endodontic courses
Managment of endodontic teeth / endodontic courses
 
Post & core in dentistry / orthodontic continuing education
Post & core in dentistry / orthodontic continuing educationPost & core in dentistry / orthodontic continuing education
Post & core in dentistry / orthodontic continuing education
 
Post & core final/ dental implant courses
Post & core final/ dental implant coursesPost & core final/ dental implant courses
Post & core final/ dental implant courses
 
Post endodontic restoration /certified fixed orthodontic courses by Indian de...
Post endodontic restoration /certified fixed orthodontic courses by Indian de...Post endodontic restoration /certified fixed orthodontic courses by Indian de...
Post endodontic restoration /certified fixed orthodontic courses by Indian de...
 
Post & core final
Post & core finalPost & core final
Post & core final
 
Restoration of endodontically treated tooth/prosthodontic courses
Restoration of endodontically treated tooth/prosthodontic coursesRestoration of endodontically treated tooth/prosthodontic courses
Restoration of endodontically treated tooth/prosthodontic courses
 
POST ENDODONTIC RESTORATION(Dr SAICHARAN)
POST ENDODONTIC RESTORATION(Dr SAICHARAN)POST ENDODONTIC RESTORATION(Dr SAICHARAN)
POST ENDODONTIC RESTORATION(Dr SAICHARAN)
 
Restoration of endodontically treated tooth /certified fixed orthodontic cour...
Restoration of endodontically treated tooth /certified fixed orthodontic cour...Restoration of endodontically treated tooth /certified fixed orthodontic cour...
Restoration of endodontically treated tooth /certified fixed orthodontic cour...
 
Restoration of endodontically treated tooth/ academy general dentistry
Restoration of endodontically treated tooth/ academy general dentistryRestoration of endodontically treated tooth/ academy general dentistry
Restoration of endodontically treated tooth/ academy general dentistry
 
Principles of tooth preparation /certified fixed orthodontic courses by In...
Principles of tooth preparation    /certified fixed orthodontic courses by In...Principles of tooth preparation    /certified fixed orthodontic courses by In...
Principles of tooth preparation /certified fixed orthodontic courses by In...
 
Esthetic post systems/ dentistry site
Esthetic post systems/ dentistry siteEsthetic post systems/ dentistry site
Esthetic post systems/ dentistry site
 
Esthetic post systems/ dental crown & bridge courses
Esthetic post systems/ dental crown & bridge coursesEsthetic post systems/ dental crown & bridge courses
Esthetic post systems/ dental crown & bridge courses
 
Restoration of the endodontically treated tooth
Restoration of the endodontically treated tooth Restoration of the endodontically treated tooth
Restoration of the endodontically treated tooth
 
Decision Making in Restoration of Endodontically-Treated Teeth
Decision Making in Restoration of Endodontically-Treated TeethDecision Making in Restoration of Endodontically-Treated Teeth
Decision Making in Restoration of Endodontically-Treated Teeth
 
Restoration of endodontically treated teeth
Restoration of endodontically treated teethRestoration of endodontically treated teeth
Restoration of endodontically treated teeth
 
Endodontically treated teeth ppt - a detail
Endodontically treated teeth ppt - a detailEndodontically treated teeth ppt - a detail
Endodontically treated teeth ppt - a detail
 
Advanced treatment of post & core - A presentation
Advanced treatment of post & core - A presentationAdvanced treatment of post & core - A presentation
Advanced treatment of post & core - A presentation
 
Post and core buildup
Post and core buildupPost and core buildup
Post and core buildup
 

Mais de Indian dental academy

Indian Dentist - relocate to united kingdom
Indian Dentist - relocate to united kingdomIndian Dentist - relocate to united kingdom
Indian Dentist - relocate to united kingdomIndian dental academy
 
1ST, 2ND AND 3RD ORDER BENDS IN STANDARD EDGEWISE APPLIANCE SYSTEM /Fixed ort...
1ST, 2ND AND 3RD ORDER BENDS IN STANDARD EDGEWISE APPLIANCE SYSTEM /Fixed ort...1ST, 2ND AND 3RD ORDER BENDS IN STANDARD EDGEWISE APPLIANCE SYSTEM /Fixed ort...
1ST, 2ND AND 3RD ORDER BENDS IN STANDARD EDGEWISE APPLIANCE SYSTEM /Fixed ort...Indian dental academy
 
Invisalign -invisible aligners course in india
Invisalign -invisible aligners course in india Invisalign -invisible aligners course in india
Invisalign -invisible aligners course in india Indian dental academy
 
Invisible aligners for your orthodontics pratice
Invisible aligners for your orthodontics praticeInvisible aligners for your orthodontics pratice
Invisible aligners for your orthodontics praticeIndian dental academy
 
Development of muscles of mastication / dental implant courses
Development of muscles of mastication / dental implant coursesDevelopment of muscles of mastication / dental implant courses
Development of muscles of mastication / dental implant coursesIndian dental academy
 
Corticosteriods uses in dentistry/ oral surgery courses  
Corticosteriods uses in dentistry/ oral surgery courses  Corticosteriods uses in dentistry/ oral surgery courses  
Corticosteriods uses in dentistry/ oral surgery courses  Indian dental academy
 
Cytotoxicity of silicone materials used in maxillofacial prosthesis / dental ...
Cytotoxicity of silicone materials used in maxillofacial prosthesis / dental ...Cytotoxicity of silicone materials used in maxillofacial prosthesis / dental ...
Cytotoxicity of silicone materials used in maxillofacial prosthesis / dental ...Indian dental academy
 
Diagnosis and treatment planning in completely endntulous arches/dental courses
Diagnosis and treatment planning in completely endntulous arches/dental coursesDiagnosis and treatment planning in completely endntulous arches/dental courses
Diagnosis and treatment planning in completely endntulous arches/dental coursesIndian dental academy
 
Properties of Denture base materials /rotary endodontic courses
Properties of Denture base materials /rotary endodontic coursesProperties of Denture base materials /rotary endodontic courses
Properties of Denture base materials /rotary endodontic coursesIndian dental academy
 
Use of modified tooth forms in complete denture occlusion / dental implant...
Use of modified  tooth forms  in  complete denture occlusion / dental implant...Use of modified  tooth forms  in  complete denture occlusion / dental implant...
Use of modified tooth forms in complete denture occlusion / dental implant...Indian dental academy
 
Dental luting cements / oral surgery courses  
Dental   luting cements / oral surgery courses  Dental   luting cements / oral surgery courses  
Dental luting cements / oral surgery courses  Indian dental academy
 
Dental casting alloys/ oral surgery courses  
Dental casting alloys/ oral surgery courses  Dental casting alloys/ oral surgery courses  
Dental casting alloys/ oral surgery courses  Indian dental academy
 
Dental casting investment materials/endodontic courses
Dental casting investment materials/endodontic coursesDental casting investment materials/endodontic courses
Dental casting investment materials/endodontic coursesIndian dental academy
 
Dental casting waxes/ oral surgery courses  
Dental casting waxes/ oral surgery courses  Dental casting waxes/ oral surgery courses  
Dental casting waxes/ oral surgery courses  Indian dental academy
 
Dental ceramics/prosthodontic courses
Dental ceramics/prosthodontic coursesDental ceramics/prosthodontic courses
Dental ceramics/prosthodontic coursesIndian dental academy
 
Dental implant/ oral surgery courses  
Dental implant/ oral surgery courses  Dental implant/ oral surgery courses  
Dental implant/ oral surgery courses  Indian dental academy
 
Dental perspective/cosmetic dentistry courses
Dental perspective/cosmetic dentistry coursesDental perspective/cosmetic dentistry courses
Dental perspective/cosmetic dentistry coursesIndian dental academy
 
Dental tissues and their replacements/ oral surgery courses  
Dental tissues and their replacements/ oral surgery courses  Dental tissues and their replacements/ oral surgery courses  
Dental tissues and their replacements/ oral surgery courses  Indian dental academy
 

Mais de Indian dental academy (20)

Indian Dentist - relocate to united kingdom
Indian Dentist - relocate to united kingdomIndian Dentist - relocate to united kingdom
Indian Dentist - relocate to united kingdom
 
1ST, 2ND AND 3RD ORDER BENDS IN STANDARD EDGEWISE APPLIANCE SYSTEM /Fixed ort...
1ST, 2ND AND 3RD ORDER BENDS IN STANDARD EDGEWISE APPLIANCE SYSTEM /Fixed ort...1ST, 2ND AND 3RD ORDER BENDS IN STANDARD EDGEWISE APPLIANCE SYSTEM /Fixed ort...
1ST, 2ND AND 3RD ORDER BENDS IN STANDARD EDGEWISE APPLIANCE SYSTEM /Fixed ort...
 
Invisalign -invisible aligners course in india
Invisalign -invisible aligners course in india Invisalign -invisible aligners course in india
Invisalign -invisible aligners course in india
 
Invisible aligners for your orthodontics pratice
Invisible aligners for your orthodontics praticeInvisible aligners for your orthodontics pratice
Invisible aligners for your orthodontics pratice
 
online fixed orthodontics course
online fixed orthodontics courseonline fixed orthodontics course
online fixed orthodontics course
 
online orthodontics course
online orthodontics courseonline orthodontics course
online orthodontics course
 
Development of muscles of mastication / dental implant courses
Development of muscles of mastication / dental implant coursesDevelopment of muscles of mastication / dental implant courses
Development of muscles of mastication / dental implant courses
 
Corticosteriods uses in dentistry/ oral surgery courses  
Corticosteriods uses in dentistry/ oral surgery courses  Corticosteriods uses in dentistry/ oral surgery courses  
Corticosteriods uses in dentistry/ oral surgery courses  
 
Cytotoxicity of silicone materials used in maxillofacial prosthesis / dental ...
Cytotoxicity of silicone materials used in maxillofacial prosthesis / dental ...Cytotoxicity of silicone materials used in maxillofacial prosthesis / dental ...
Cytotoxicity of silicone materials used in maxillofacial prosthesis / dental ...
 
Diagnosis and treatment planning in completely endntulous arches/dental courses
Diagnosis and treatment planning in completely endntulous arches/dental coursesDiagnosis and treatment planning in completely endntulous arches/dental courses
Diagnosis and treatment planning in completely endntulous arches/dental courses
 
Properties of Denture base materials /rotary endodontic courses
Properties of Denture base materials /rotary endodontic coursesProperties of Denture base materials /rotary endodontic courses
Properties of Denture base materials /rotary endodontic courses
 
Use of modified tooth forms in complete denture occlusion / dental implant...
Use of modified  tooth forms  in  complete denture occlusion / dental implant...Use of modified  tooth forms  in  complete denture occlusion / dental implant...
Use of modified tooth forms in complete denture occlusion / dental implant...
 
Dental luting cements / oral surgery courses  
Dental   luting cements / oral surgery courses  Dental   luting cements / oral surgery courses  
Dental luting cements / oral surgery courses  
 
Dental casting alloys/ oral surgery courses  
Dental casting alloys/ oral surgery courses  Dental casting alloys/ oral surgery courses  
Dental casting alloys/ oral surgery courses  
 
Dental casting investment materials/endodontic courses
Dental casting investment materials/endodontic coursesDental casting investment materials/endodontic courses
Dental casting investment materials/endodontic courses
 
Dental casting waxes/ oral surgery courses  
Dental casting waxes/ oral surgery courses  Dental casting waxes/ oral surgery courses  
Dental casting waxes/ oral surgery courses  
 
Dental ceramics/prosthodontic courses
Dental ceramics/prosthodontic coursesDental ceramics/prosthodontic courses
Dental ceramics/prosthodontic courses
 
Dental implant/ oral surgery courses  
Dental implant/ oral surgery courses  Dental implant/ oral surgery courses  
Dental implant/ oral surgery courses  
 
Dental perspective/cosmetic dentistry courses
Dental perspective/cosmetic dentistry coursesDental perspective/cosmetic dentistry courses
Dental perspective/cosmetic dentistry courses
 
Dental tissues and their replacements/ oral surgery courses  
Dental tissues and their replacements/ oral surgery courses  Dental tissues and their replacements/ oral surgery courses  
Dental tissues and their replacements/ oral surgery courses  
 

Último

What is the Future of QuickBooks DeskTop?
What is the Future of QuickBooks DeskTop?What is the Future of QuickBooks DeskTop?
What is the Future of QuickBooks DeskTop?TechSoup
 
Human-AI Co-Creation of Worked Examples for Programming Classes
Human-AI Co-Creation of Worked Examples for Programming ClassesHuman-AI Co-Creation of Worked Examples for Programming Classes
Human-AI Co-Creation of Worked Examples for Programming ClassesMohammad Hassany
 
Prescribed medication order and communication skills.pptx
Prescribed medication order and communication skills.pptxPrescribed medication order and communication skills.pptx
Prescribed medication order and communication skills.pptxraviapr7
 
How to Add Existing Field in One2Many Tree View in Odoo 17
How to Add Existing Field in One2Many Tree View in Odoo 17How to Add Existing Field in One2Many Tree View in Odoo 17
How to Add Existing Field in One2Many Tree View in Odoo 17Celine George
 
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptxClinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptxraviapr7
 
CAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptxCAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptxSaurabhParmar42
 
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxPISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxEduSkills OECD
 
Diploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdfDiploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdfMohonDas
 
P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdf
P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdfP4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdf
P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdfYu Kanazawa / Osaka University
 
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdf
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdfMaximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdf
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdfTechSoup
 
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptxPractical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptxKatherine Villaluna
 
In - Vivo and In - Vitro Correlation.pptx
In - Vivo and In - Vitro Correlation.pptxIn - Vivo and In - Vitro Correlation.pptx
In - Vivo and In - Vitro Correlation.pptxAditiChauhan701637
 
How to Show Error_Warning Messages in Odoo 17
How to Show Error_Warning Messages in Odoo 17How to Show Error_Warning Messages in Odoo 17
How to Show Error_Warning Messages in Odoo 17Celine George
 
Education and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptxEducation and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptxraviapr7
 
The basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptxThe basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptxheathfieldcps1
 
3.21.24 The Origins of Black Power.pptx
3.21.24  The Origins of Black Power.pptx3.21.24  The Origins of Black Power.pptx
3.21.24 The Origins of Black Power.pptxmary850239
 
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRA
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRADUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRA
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRATanmoy Mishra
 
Easter in the USA presentation by Chloe.
Easter in the USA presentation by Chloe.Easter in the USA presentation by Chloe.
Easter in the USA presentation by Chloe.EnglishCEIPdeSigeiro
 
The Singapore Teaching Practice document
The Singapore Teaching Practice documentThe Singapore Teaching Practice document
The Singapore Teaching Practice documentXsasf Sfdfasd
 
Ultra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptxUltra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptxDr. Asif Anas
 

Último (20)

What is the Future of QuickBooks DeskTop?
What is the Future of QuickBooks DeskTop?What is the Future of QuickBooks DeskTop?
What is the Future of QuickBooks DeskTop?
 
Human-AI Co-Creation of Worked Examples for Programming Classes
Human-AI Co-Creation of Worked Examples for Programming ClassesHuman-AI Co-Creation of Worked Examples for Programming Classes
Human-AI Co-Creation of Worked Examples for Programming Classes
 
Prescribed medication order and communication skills.pptx
Prescribed medication order and communication skills.pptxPrescribed medication order and communication skills.pptx
Prescribed medication order and communication skills.pptx
 
How to Add Existing Field in One2Many Tree View in Odoo 17
How to Add Existing Field in One2Many Tree View in Odoo 17How to Add Existing Field in One2Many Tree View in Odoo 17
How to Add Existing Field in One2Many Tree View in Odoo 17
 
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptxClinical Pharmacy  Introduction to Clinical Pharmacy, Concept of clinical pptx
Clinical Pharmacy Introduction to Clinical Pharmacy, Concept of clinical pptx
 
CAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptxCAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptx
 
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxPISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
 
Diploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdfDiploma in Nursing Admission Test Question Solution 2023.pdf
Diploma in Nursing Admission Test Question Solution 2023.pdf
 
P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdf
P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdfP4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdf
P4C x ELT = P4ELT: Its Theoretical Background (Kanazawa, 2024 March).pdf
 
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdf
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdfMaximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdf
Maximizing Impact_ Nonprofit Website Planning, Budgeting, and Design.pdf
 
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptxPractical Research 1: Lesson 8 Writing the Thesis Statement.pptx
Practical Research 1: Lesson 8 Writing the Thesis Statement.pptx
 
In - Vivo and In - Vitro Correlation.pptx
In - Vivo and In - Vitro Correlation.pptxIn - Vivo and In - Vitro Correlation.pptx
In - Vivo and In - Vitro Correlation.pptx
 
How to Show Error_Warning Messages in Odoo 17
How to Show Error_Warning Messages in Odoo 17How to Show Error_Warning Messages in Odoo 17
How to Show Error_Warning Messages in Odoo 17
 
Education and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptxEducation and training program in the hospital APR.pptx
Education and training program in the hospital APR.pptx
 
The basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptxThe basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptx
 
3.21.24 The Origins of Black Power.pptx
3.21.24  The Origins of Black Power.pptx3.21.24  The Origins of Black Power.pptx
3.21.24 The Origins of Black Power.pptx
 
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRA
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRADUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRA
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRA
 
Easter in the USA presentation by Chloe.
Easter in the USA presentation by Chloe.Easter in the USA presentation by Chloe.
Easter in the USA presentation by Chloe.
 
The Singapore Teaching Practice document
The Singapore Teaching Practice documentThe Singapore Teaching Practice document
The Singapore Teaching Practice document
 
Ultra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptxUltra structure and life cycle of Plasmodium.pptx
Ultra structure and life cycle of Plasmodium.pptx
 

Post & core /certified fixed orthodontic courses by Indian dental academy

  • 1. INDIAN DENTAL ACADEMY Leader in Continuing Dental Education www.indiandentalacademy.com www.indiandentalacademy.com
  • 2. POST AND CORE CONTENTS Introduction History Treatment planning for post and core Classification of posts Factors affecting selection of post Principles of tooth preparation for post and core The ferrule effect Core and core materials Techniques of fabrication Recent advances conclusion www.indiandentalacademy.com
  • 3. INTRODUCTION Endodontic treatment good prognosis Loss of considerable amount of tooth structure Caries Endodontic treatment &/or previous restoration Retention of subsequent restoration problematic Increases # function Restoring teeth complex procedures www.indiandentalacademy.com
  • 4. HISTORY Methods of restoring pulp less teeth for more than 250yrs. 1728-Pierre Fouchard -roots of maxillary anteriors teeth Pivot teeth –Mastic “Tenons” Replacement crowns 1800-Dubois de chamante -porcelain teeth-pivot teeth 1839-Chapin Harris - The Dental Art – pivoting of the artificial crowns to natural roots “The best that can be employed” www.indiandentalacademy.com
  • 5. 1849-Sir John Tomes - Dental philosophy and surgery principles of fabricating posts 1878-C.M.Richmond-porcelain faced dowel crowns Pivot/post with porcelain facing www.indiandentalacademy.com
  • 6. 1880-U.S. seasoned wood as pivots 19th century-Davis crown -gold casting 1960-carbon fiber post 1968-Mare Reymond- DT Light transmitting post 1989- modification of carbon fiber post 1996-Meyeberg - Zirconium posts www.indiandentalacademy.com
  • 7. TREATMENT PLANNING Good apical seal No apical sensitivity No sensitivity to pressure No active inflammation No exudate No sinus www.indiandentalacademy.com
  • 8. Changes accompanying root canal therapy Loss of tooth structure Altered physical characteristics Altered esthetics Amount of remaining tooth structure Anatomic position of the tooth Functional load on the tooth Esthetic requirements for the tooth www.indiandentalacademy.com
  • 9. Why post and core? post strengthen the root?? Retain the core buildup material & Reinforce coronal tooth structure Replace the missing portion and to protect the remaining tooth structure Basically consists of •Post •Core and •Final restoration www.indiandentalacademy.com
  • 10. POST AND CORE POST(DOWEL): The dowel is a post or other relatively rigid restorative material placed in the root of a non vital tooth” CORE: The core consists of restorative material placed in the coronal area of a tooth It replaces the carious, fractured or otherwise missing coronal structure and retains the final restoration/crown. CLASSIFICATION OF POST(DOWEL): Categorized by number of different ways Broadly categorized into:  Custom cast posts and  Preformed post systems www.indiandentalacademy.com
  • 11. Preformed dowel system can be further categorized based on their geometric shape Tapered posts Parallel posts further classified by their surface configuration as Smooth posts Serrated posts Threaded posts Based on mode of retention of the post to the canal portion Active posts Passive posts v-lock post c-post snow post flexi-post cosmopost aestheti post para pos www.indiandentalacademy.com
  • 12. Based on material Non metallic posts C-post Aestheti Plus post Cera post Metallic posts Dentatus post Root post Para post www.indiandentalacademy.com
  • 13. Ideal properties of a post .Maximum protection .Adequate retention with in the root .Maximum retention of the core and crown .Maximum protection of the crown margin/cement seal .Pleasing esthetics when indicated .High radiographic visibility .Retrievability .Biocompatibility www.indiandentalacademy.com
  • 14. Factors which effect the post selection post length post shape post diameter Surface configuration post material/composition Luting agent www.indiandentalacademy.com
  • 15. POST LENGTH Equal to the cervico incisal or cervico occlusal length of crown Longer than the crown One and one third the crown length Half the root length Two third the root length Four fifth the root length Half way between crestal bone and root apex As long as possible without disturbing the apical seal 4.00mm safety zone is required for apical seal • 2-3mm ---definite leakage  4 mm-- adequate—Nixon et al  5mm—Apical seal---Mattison et al www.indiandentalacademy.com
  • 16. Three quarters the length of root in long rooted teeth In average length teeth-retain apical 5.00mm Should extend at least 4mm apical to bone crest Molar posts not be extended more than 7mm www.indiandentalacademy.com
  • 17. POST SHAPE Parallel sided parallel sided posts - removal of more tooth structure less chance of root fracture Parallel design improves post retention and force distribution. distribution More retentive than tapered forms Tapered form Produce wedging effect - significant lateral forces vertical root fracture Requires less removal of tooth structure Limited to use in tapered root systems www.indiandentalacademy.com
  • 18. POST DIAMETER Large diameter post - higher retention -Standlee, Kvist Increase in diameter - no significant increase in retention -Kurer,Harison Length is most important factor in post retention and diameter is only a secondary factor - Krupp et al Increase in post diameter causes higher stress in the tooth — Mattison Potential for root fracture increases by SIX times/mm of diameter www.indiandentalacademy.com
  • 19. Teeth with thicker diameter (1.8mm) post fractured more easily than with a thinner (1.3mm) --Trabert et al Photoelastic studies - internal stresses are less with thinner posts FEM studies have failed to demonstrate increase in stress with increase in diameter of the posts Recent FEM analysis and fractographic analysis —Dent. Trauma—2004 Tensile loading—strains/deformations in inner dentin and stress at the outer dentin surface www.indiandentalacademy.com
  • 20. To avoid root perforation by excessive preparation, safe instrument diameters are proposed Tilk et al Shillingburg et al Small teeth 0.6-0.7mm 0.7mm Larger diameter 1.00mm 1.7mm Remaining 0.8-0.9mm 1.3mm small diameter root—0.6-0.7mm large diameter root---1-1.2mm in molars-should not exceed more than 7mm in length even in thicker roots. www.indiandentalacademy.com
  • 21. SURFACE CONFIGURATION Smooth surface - least retentive Serrated surface - more retentive Threaded surface - most retentive intended to engage canal walls significant stress in the tooth Modifications of surface www.indiandentalacademy.com
  • 22. LUTING AGENTS Resin cements Higher retention Lower microleakage protection by strengthening of root Superiority of one cement over another is not clear Bonded resin cements - strengthening effects in roots for some period of time Technique sensitive Contamination Delivery of the etchent/ bonding agent When using resin cements use dual cure resin cement www.indiandentalacademy.com
  • 23. POST MATERIALS functional stress, resist corrosion and biocompatible stress – adequate stiffness - high yield strength - favorable fatigue properties to function adequately Allergy and sensitivity with Ni-Cr alloy Titanium preformed post-carbon fiber post Ceramic posts Poly ethylene woven posts www.indiandentalacademy.com
  • 24. PRINCIPLES OF TOOTH PREPARATION Many of the principles relating to the tooth preparation apply equally to the endodotically treated teeth Additional concepts to avoid failure Conservation of tooth structure Retention form Resistance form www.indiandentalacademy.com
  • 25. Conservation of tooth structure ROOT CANAL Remove only minimal tooth structure from the canal Over enlargement lead to weakening or perforation chances of splitting while cementation or functioning Canal be enlarged to enable the post to fit snugly for strength & retention www.indiandentalacademy.com
  • 26. Crown The amount of remaining tooth structure is the single most important predictor of clinical success Caries, previous restoration and endodontic cavity preparation considerable loss of tooth structure Further reduction to accommodate the crown and to remove undercuts little coronal dentin As much coronal tooth structure should be conserved to reduce the stress concentration at the gingival margin Extension of the axial wall of the crown apical to the missing tooth structure provides as a ferrule - hold the remaining tooth structure preventing root fracture during function www.indiandentalacademy.com
  • 27. RETENTION FORM Dislodgement of post retained anterior crown is due to inadequate retention form of the prepared post Retention of the post is mainly affected by – The preparation geometry Post length Post diameter Surface texture The luting agent www.indiandentalacademy.com
  • 28. PREPARATION GEOMETRY Anterior teeth Some canals have nearly circular cross section - prepared to give parallel walls or a minimum taper allowing the use of preformed post of respective configuration Retention is proportional to the surface area www.indiandentalacademy.com
  • 29. Posterior teeth Relatively long post with circular cross section should be avoided Relatively short posts in divergent canals better retention 3mm or more amount of tooth structure is present -- preparation of the root canal is not necessary Widest canals are selected for post placement in posterior teeth www.indiandentalacademy.com
  • 30. RESISTANCE FORM An excessive internal preparation of root weakens the root and possibility of failure in restoration Post design should distribute stresses as evenly as possible FACTORS AFFECTING RESISTANCE 1. Crown bevel- Part of the crown extends past post & core margin - extends on natural tooth structure Effective tooth 360 degrees and at least 1.5mm on to tooth structure below margin www.indiandentalacademy.com
  • 31. 2. Vertical remaining tooth structure- 3. Anti rotational features- Oblong canal space provides resistance to rotational forces When coronal dentin is lost, anti rotation element can be placed in the bulkiest aspect of teeth www.indiandentalacademy.com
  • 32. Crown& crown preparation Minimum of 2mm dentin axial wall height Parallel axial walls Metal should encircle the tooth Margins on solid tooth structure Not invade attachment apparatus www.indiandentalacademy.com
  • 33. Greatest stress concentration in the tooth is found at the shoulder, inter proximally and at the apex dentin should be preserved in these areas if possible Stresses are reduced as the post length increases Parallel sided posts distribute stresses more evenly Sharp angles should be avoided high stress during loading High stress will be generated when cementing parallel sided posts which don’t have escape vent www.indiandentalacademy.com
  • 34. THE FERRULE EFFECT FERRULE is a metal ring or cap put around the end of a tool, cane to provide added strength OR Is a vertical band of tooth structure at the gingival aspect of a crown preparation Primarily -- resistance form and enhances longevity Circumferential contra bevel reinforces the coronal aspect Positive occlusal seat - acts as a anti rotational device In teeth with little or no clinical crown remaining large contra bevel on root surface with finish of crown preparation acts as ferrule Ferrule must be on tooth structure and not invade the attachment apparatus www.indiandentalacademy.com
  • 35. Types of ferrule & Core ferrule and Crown ferrule Crown ferrule > effective - core ferrule Ferrule length is more important than the post length in increasing # of tooth. --- Int J P 1999 2mm of dentin ferrule of crown more effectively enhances # resistance of custom cast post and core. -----JPD2003 Even presence of 1mm of ferrule provides twice the amount of resistance to fracture www.indiandentalacademy.com
  • 36. CORE AND CORE MATERIALS The core is anchored to the tooth by a direct connection of the core into canal or through a post Tooth + post & core mechanical, chemical/adhesive The remaining tooth structure can be altered to enhance retention of the core or to provide resistance to core rotation under function The irregular nature -residual coronal tooth structure, morphology of the pulp chamber & canal orifices additional alterations www.indiandentalacademy.com
  • 37. Desirable properties of core material include •Dimensional stability •Ease of manipulation •Natural tooth color •Rapid and hard setting > immediate crown preparation •High compressive and tensile strength •High modulus of elasticity and fracture toughness •Low plastic deformation •Bio compatibility •Cariostatic and low cost www.indiandentalacademy.com
  • 38. CAST CORE A cast core forming a one piece post and core traditional and proven method of restoring a tooth Advantages Core does not depend on mechanical means Can be retrieved for endodontic retreatment Non corrosive when cast with noble metal Disadvantages The number of appointments required are more Laboratory expenses and time required for fabrication Technique sensitive in the laboratory phase www.indiandentalacademy.com
  • 39. COMPOSITE RESIN CORE Advantages Ease of manipulation Less time consuming and A additional retention and anti rotation features easily achieved Disadvantages Polymerization shrinkage & contraction- marginal discrepancy & micro cracks Difference in co-efficient of thermal expansion micro leakage At least 2mm coronal tooth structure - for build up Technique sensitivity Retention of core with zirconium posts www.indiandentalacademy.com
  • 40. GLASS IONOMER/ METAL MODOFIED GIC CORE In teeth with significant amount of dentin remaining and additional retention is available Main advantage is the anticariogenic potential High solubility and moisture sensitivity Limited for building up of small area Low retention to preformed dowels Low strength and fracture toughness Technique sensitivity Usually not recommended - low strength --JPD-1982 www.indiandentalacademy.com
  • 41. RMGIC CORE: Improved properties conventional GIC Bond strength close to that of bonded composite restoration Minimal microleakage Disadvantage Dimensional instability in the presence of moisture > expansion Can fracture/ failure of the ceramic crowns -IJP-1998 www.indiandentalacademy.com
  • 42. CORONAL RADICULAR CORE Used as an alternative - traditional cast post and core This consists of core that replaces the coronal tooth structure extends 2-4mm into coronal portion of root canal Utilizes conventional restorative materials-amalgam, composite resins or modified GIC Provides adequate strength and retention as a core In combination with bonding - gingival discoloration, provides protection against coronal leakage www.indiandentalacademy.com
  • 43. TECHNIQUES FOR POST AND CORE FABRICATION Tooth preparation for post and core can be accomplished in 3 steps- 1.removal of root canal filling material 2.enlargement of the canal 3.preparation of the coronal tooth structure post and core fabrication is best done after the coronal preparation of the tooth structure Amount of tooth preparation to be done depends on the final restoration it in turn affects the extent of core fabrication www.indiandentalacademy.com
  • 44. REMOVAL OF ENDODONTIC FILLING MATERIAL The amount of gutta percha removal is dictated by The desired post length, type, bone height and the root morphology Warmed endodontic plugger rotary instrument Rotary instrumentation > straying from the canal and cutting the excess radicular dentin - weakening / result in lateral perforation www.indiandentalacademy.com
  • 45. ENLAREMENT OF THE ROOT CANAL SPACE The Peeso reamers & Gates Glidden drill Available in sizes 0.7-1.7mm & 0.6-1.5mm dia in graduated sizes from 1-6, non cutting tips canal preparation - keyway or a groove with bur no. 170 in the bulkiest portion of Canal to a depth of diameter of the bur and length of bur www.indiandentalacademy.com
  • 46. PHILOSOPHIES OF POST SPACE PREPARATION Conservationist – narrowest diameter for certain post length Pilo & Tamse Proportionists - diameter should not be > 1/3 root diameter Stern & Harshfield Preservationists – at least 1mm of sound dentin around entire post www.indiandentalacademy.com
  • 47. PROCEDURE Begin removal of gutta percha with heated condenser Measure as large size Peeso reamer as will fit the obturated space against a radiograph leaving apical 5mm of filling with reference to a stable land mark Once gutta percha is removed check the accuracy Enlarge the canal to a desired size - preserve a minimum of 1mm around the post at mid root and beyond and should not be one third the diameter of the root at the CEJ www.indiandentalacademy.com
  • 48. PREPARATION OF THE CORONAL TOOTH STRUCTURE Prepare the remaining tooth structure adequately for the extra coronal restoration All internal and external under cuts are removed Any unsupported tooth structure if present should be removed The remaining portion is prepared perpendicular to the post which will create a positive stop while cementing the post www.indiandentalacademy.com
  • 50. PREFABRICATED POSTS Enlarge the canal one to two sizes with a drill or reamer smaller than the drill prescribed by the manufacturer A wide range of prefabricated posts shapes and sizes parallel sided prefabricated are recommended for conservatively prepared root canals with roots of circular cross section. Excessively prepared canals managed with custom post. however situation should be evaluated on individual basis www.indiandentalacademy.com
  • 51. Maximum recommended dowel size with outline of root at mid root portion with root outline and post diameters. Outline of Root at mid root area and post diameters www.indiandentalacademy.com
  • 52. CUSTOM CAST POST AND CORE FABRICATION TECHNIQUE Direct or indirect technique A direct technique using inlay wax, auto polymerizing or light polymerizing resin usually for single teeth restoration Indirect technique – multiple teeth or tooth with multiple canals The post/pin should extend the full length of prepared canal soft wax is added or a brush bead technique is used to add resin www.indiandentalacademy.com
  • 53. Deficiency or excess is corrected and coronal part is shaped The finish line prepared should be on tooth and not on the core Remove the pattern and proceed with the laboratory steps www.indiandentalacademy.com
  • 54. Indirect technique impression is made with a elastomeric impression material with adequate reinforcement to prevent distortion the impression material can either be placed in the canal with a lentulo spiral or can be injected into the post Space impression is removed , evaluated and working cast prepared post pattern prepared and other procedures carried out www.indiandentalacademy.com
  • 55. Direct indirect technique —pick up casting or core Miscellaneous Dowel inlays and retrofit posts www.indiandentalacademy.com
  • 56. PROVISIONAL RESTRORATIONS IN POST AND CORE FABRICATION A provisional restoration plays an important role in the successful restoration of a tooth FUNCTIONS •Esthetics •Protection of the tooth from further damage •Prevents migration of adjacent teeth •provides occlusal function www.indiandentalacademy.com
  • 57. crown formers and posts can be used in various combinations- •Polycarbonate crowns relined with acrylic •Plastic posts relined with acrylic resin •Silicone post reinforced with a paper clip or orthodontic wire •Braided SS wire with acrylic resin crown •SS crowns with reinforcement •Reamers or files reinforced with acrylic www.indiandentalacademy.com
  • 58. RECENT ADVANCES Prefabricated posts- increasingly popular Ease of placement and Crown preparation FIBER POSTS CARBON FIBER COMPOSITE POSTS- More flexible than metal posts and have same modulus of elasticity of dentin approximately Even distribution of forces when bonded with resins Biocompatible and non cytotoxic Less root fracture Have the highest strength among the fiber posts www.indiandentalacademy.com
  • 59. Disadvantages Dark in color Radiolucent in appearance Reduction of strength after placement Cause stress concentration at the margins of the restorations --JDR-1999 Fibers were unidirectional Multidirectional arrangement has improved their longevity Dark color is over come- coating the post with zirconium - aestheti plus post Recent versions are white and are relatively easier to remove by boring the middle of the post with ultrasonic or rotary instrument www.indiandentalacademy.com
  • 60. carbonite post available in 3 reamer sizes as 2, 3, & 4 -- 1.20, 1.35 &1.50 Mira post www.indiandentalacademy.com
  • 61. Bond between tooth, core and post - adhesive technique parapost,glassix, fiberkor, lucent anchor, Mirafit white - glass fiber posts luminex, light post—light transmitting posts Aestheti plus, DT light post –quartz fiber post Para post white fiber Aestheti plus – A 2 www.indiandentalacademy.com
  • 62. FRC POSTEC Glass fiber reinforced Composite post Elasticity dentin and dentin like shade size 1 and 3 with corresponding reamer as white and Red color Polymer matrix of urethane dimethacrylate & glycol dimethacrylate yitterbium trifluoride & dispersed si. Dioxide Impression post of Cr-Ni Size 1-15mm, 0.8mm size 2 -18mm, 1m Size 1- 0.7mm Size 3- 0.9mm Direct or indirect tech. www.indiandentalacademy.com
  • 63. CERAMIC AND ZIRCONIUM POSTS ceramic and zirconium posts - translucent Esthetically superior to metal posts and for all ceramic crowns ---JPD2000 Its impossible to grind away the posts Zirconium posts are not etchable ---Int sym-1998 Retention of the core ceramic and zirconium posts #retrievable and they should be avoided –AAE-2004 Weaker than the metal posts Thicker posts - Require additional removal of root dentin www.indiandentalacademy.com
  • 64. Direct method Indirect method - Reinforcement Cosmo post, snow post www.indiandentalacademy.com
  • 65. METAL POSTS World post supplied with primary reamer and secondary drill secondary drill- tier-stabilizes & bottoming out Length & head position Peeso Gates Primary reamer 1 2 0 3 4 1 4 5 2 5 6 3 www.indiandentalacademy.com
  • 66. Flexi-post Flexi-flange post Ss, titanium alloy Split shank design Access post Root post -Ti post www.indiandentalacademy.com
  • 67. Para post xp- ss, Ti Para post xh – Ti Para post xt – Ti Para post xp-casting kit PRO POST Y-2-0.94mm R-3-1.20mm B-4-1.45mm G-5-1.70mm Surface of post- acid etched www.indiandentalacademy.com
  • 68. Cytcok Ni Ti post Dentatus post www.indiandentalacademy.com
  • 69. CUSTOM MADE VS PRE FABRICATED POST The canal is prepared to fit the prefabricated post, but custom made post is made to fit the tooth Custom made cast post better adaptation to canal configuration Do not require auxiliary means of retention routinely Gives the best results when change in the path of insertion or crown angulation is required www.indiandentalacademy.com
  • 70. CONCLUSION Prefabricated posts - popular + ease of placement and + allow restoring the tooth for immediate crown preparation It is possible to achieve high level of clinical success with most of the current available materials  Further understanding and modification currently available material with their physical and mechanical properties will improve their performance. www.indiandentalacademy.com