The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and offering a wide range of dental certified courses in different formats.
Indian dental academy provides dental crown & Bridge,rotary endodontics,fixed orthodontics,
Dental implants courses.for details pls visit www.indiandentalacademy.com ,or call
0091-9248678078
20. Long edgewise bracket
Horizontal and vertical
slotted bracket
Jarabak
Horizontal slot .017’’ wide
.038’’ deep
Vertical slot .017’’ wide
.045’’ deep
www.indiandentalacademy.com
21. Long edgewise bracket
Available in 3 lengths
.160’’
.120’’
distal
.140’’
mesial
Vertical slot on the base
On distal end www.indiandentalacademy.com
.016×.016
26. Curved base lewis bracket
Increase contact with band .
Reduces trapping of the food.
www.indiandentalacademy.com
27. Vertical slot Lewis bracket
020 x020 vertical slot
www.indiandentalacademy.com
28. Steiner bracket
Flexible rotation arms - did not rely entirely on the
resiliency of archwire for tooth rotation.
Single width edgewise bracket
www.indiandentalacademy.com
30. Lang brackets
Wedge shape in profile
Allows ease in lagation
Prevents food lodgments
www.indiandentalacademy.com
31. Lang brackets
Flattening of archwire curvature
Incomplete seating of the wire.
Curvature maintained
www.indiandentalacademy.com
32. Broussard bracket
Grayford broussard
Modified edgewise bracket
in which there is addition of
0.0185 x 0.046 slot –to
accept doubled 0.018
auxiliary wire
www.indiandentalacademy.com
33. Unitwin bracket (1989)
Thomas Creekmore
Centered slot concept
Single bracket
Without tie wings
Slot placed in the center
of a .045’’twin bracket
www.indiandentalacademy.com
34. Unitwin bracket (1989)
Utilizes the feature of
both single and twin
bracket
Maximum inter bracket
span single width
Rotational control
twin tie wings
www.indiandentalacademy.com
35. The Dual Enviroment Bracket
George F. Schudy(1990)
Design based on computer remodeling
Large outer slot –.040’’for
twin brackets and.030’’for
single brackets.
Smaller inner slot-.018/.016’’
www.indiandentalacademy.com
36. The Dual Enviroment Bracket
Outer slot allows the
use of full size .
016×.022 initial arch
wire
Same wire seated in
inner slot
www.indiandentalacademy.com
37. The Dual Enviroment Bracket
Clinical advantage
1.
Faster leveling of the arches with fewer wire
changes
2.
Easier torquing of the teeth
www.indiandentalacademy.com
38. Bioefficient brackets (1995)
Anthony D.Viazis
deltoid bracket
Wide horizontal member but has a single width slot.
Multifunctional bracket for
bioefficient therapy
www.indiandentalacademy.com
39. Bioefficient brackets (1995)
Maximum potential of any archwire is achieved when
the largest possible wire is used.
1. Conformity to the crown anatomy and gingival outline.
www.indiandentalacademy.com
42. Bioefficient brackets (1995)
3. Minimum friction - Slot is elevated from the
horizontal member. Area of contact bw the wire
and the bracket is reduced
Better esthetics
www.indiandentalacademy.com
45. Transition from .022 .018 slot
022’’ or 0.55 mm wide
028’’ deep
Gold archwires
Late 1920s stainless steel
Difference in the properties
www.indiandentalacademy.com
46. Transition from .022 .018 slot
Reduce the size of the wire
Reduce the slot width to .018’’
Smaller archwires were used 018×025’’
Force delivered was acceptable
Introduction of TMA and NiTi
Limitation of original 022 slot have been overcome
www.indiandentalacademy.com
47. Andrews straight wire appliance
BRACKETS stand in between tooth and the
orthodontist
1960 – concept of fully programmed appliance
Advantage of FPA
ELIMINATES WIRE BENDING
www.indiandentalacademy.com
48. Andrews
Driving force for FPA
1.
Analysis of orthodontically treated final occlusion
Analysis of naturally occurring optimal occlusion
Six keys to normal occlusion
2.
3.
www.indiandentalacademy.com
57. Andrews classification
1.
Non programmed appliance-a set of brackets
designed the same for all tooth types ,relying totally
on wire bending.
2.
Partly programmed appliance- a set of brackets
designed with some in built features ,but always
require some wire bending
3.
Fully programmed appliance- a set of brackets
designed to guide teeth directly to their goal
positions with unbent wires.
www.indiandentalacademy.com
59. Non programmed bracket
Angle’s edgewise app
FA point on FACC
All crowns will have equal facial prominences
Extensive Wire bending
www.indiandentalacademy.com
60. Non programmed bracket
Design shortcomings
1. Bracket base perpendicular to bracket stem.
2. Bracket bases are not contoured.
3. Slots are not angulated
4. Bracket stem are of equal faciolingual thickness.
5. Maxillary molar offset is not built in.
6. Bracket siting techniques are unsatisfactory.
www.indiandentalacademy.com
80. Fully programmed appliance
Simplest version of FPA
Standard brackets
One bracket for each tooth except for incisors and
Maxillary molars
Partly programmed app 3 slot siting features
www.indiandentalacademy.com
81. Fully programmed appliance
Slot siting feature
Feature 1Mid transverse planes of the
slot, stem and crown must be
the same.
www.indiandentalacademy.com
82. Fully programmed appliance
Slot siting feature
Feature 2- Base of the bracket for each tooth type must
have same inclination as the facial plane of the crown.
www.indiandentalacademy.com
83. Fully programmed appliance
Slot siting feature
Feature 3- Each bracket inclined base must
be contoured occluso gingivally
www.indiandentalacademy.com
84. Fully programmed appliance
Slot siting feature
Feature 4- Mid sagittal plane of the slot,
stem and crown must be same.
www.indiandentalacademy.com
85. Fully programmed appliance
Slot siting feature
Feature 5 -The plane of the bracket base at its
base point must be identical to the facial
plane of the crown at the FA point
www.indiandentalacademy.com
86. Fully programmed appliance
Slot siting feature
Feature 6 - Mesio distal curvature of base should match
tooth.
the m-d contour of the
www.indiandentalacademy.com
87. Fully programmed appliance
Slot siting feature
Feature 7 - The vertical components should be parallel
to one another
The horizontal components
should be equidistant from the
gingiva and the cusp tips.
www.indiandentalacademy.com
89. Fully programmed appliance
Slot siting feature
Feature 8 – All slots point
must have same distance
between them and the crown
embrasure line.
www.indiandentalacademy.com
90. Fully programmed appliance
Convenience feature-
1. The gingival tie wings of the posterior
Brackets extend farther laterally .
www.indiandentalacademy.com
92. Fully programmed appliance
Convenience feature-
3. Facial surface of the incisor and canine brackets
are designed to parallel their bases - lip comfort.
www.indiandentalacademy.com
93. Fully programmed appliance
Convenience feature-
4. In mandibular incisor brackets, the tie wings are
designed with least amount occlusofacial
prominence
5.Bracket identification.
www.indiandentalacademy.com
95. Fully programmed appliance
Incisor bracket
3 brackets with different base inclinations
Post treatment interjaw relationship can be predicted
Unpublished study (1968) on hundred cephs
www.indiandentalacademy.com
101. Tooth
II molar
I Molar
II PM
I PM
Canine
Maxillary
5/-9
(10o
offset)
5/-9
(10o
offset)
2/-7
2/-7
11/-7
Mandibul
ar
2/-35
2/-30
2/-22
2/-17
5/-11
www.indiandentalacademy.com
102. Inclination and angulation for 6-7 to finish in class
II
Tip reduced and offset removed
Tooth
II Molar
I Molar
Maxillary
0/-9
0/-9
Mandibular
-
-
www.indiandentalacademy.com
103. Fully programmed Translation brackets
Bodily movement of the teeth is required
What is translation???
Translation problems
Need for over correction
www.indiandentalacademy.com
104. Fully programmed Translation brackets
They have all the qualities of the standard brackets
plus few other feature .
Power arm
Counter mesiodistal tip
Counter rotation
Counter buccolingual tip
www.indiandentalacademy.com
105. Fully programmed Translation brackets
Minimum translation bracket – requiring a translation of
2 mm or less
Medium translation brackets – requiring a
translation of more than 2mm but less than 4 mm
Maximum translation brackets -requiring a
translation of more than 4 mm.
www.indiandentalacademy.com
109. Fully programmed Translation brackets
Counter rotation
The slot is rotated in the direction of translation
Slot rotation plus mesiodistal slot length plus
archwire flex equals counterrotation and
rotation overcorrection.
www.indiandentalacademy.com
111. Fully programmed Translation brackets
Slot angulation plus mesiodistal slot length plus power
arm length plus activated archwire equals
Countermesiodistal tip and angulation overcorrection.
www.indiandentalacademy.com
112. Fully programmed Translation brackets
Counterbuccolingual tip
Base inclination + faciolingual slot length + arch
wire deflection = Counterbuccolingual tip
www.indiandentalacademy.com
113. Thank you
For more details please visit
www.indiandentalacademy.com
www.indiandentalacademy.com