arrangment of artificial D.SIRAG ALHMADI PROSTODONTICES TRIPOLI UNIVERSITY

1. Prepared by
d.Sirag al-hamadi
Tripoli university
Dental faculty
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2. The carved occlusion rims should provide
reliable guides for placement of the teeth.
These guides are:
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3. Guide lines (midline, high lip line-1
(.and canine lines
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4. The proper placement of the-2
.occlusal plane
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5. .Proper lip support-3
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6. (vertical dimension of occlusion
(.and centric relation
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8. Upper anterior teeth
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10. :Alveolar ridge resorption- 1
•Ridge resorption in anterior maxilla
occurs upwards and back wards.
• In anterior mandible it occurs
downward and lingually.
•The anterior teeth are placed in
maxillary denture forwards and
inferiorly.
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11. The distance from papilla to gingival
margin 8 mm
From papillae to incisal edge 10 mm
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12. Esthetics-teeth is important.
Lip support by the
2
Amount of tooth showing (about 2 mm)
Lower lip pressure causes instability of mandibular denture
if placed anteriorly.
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13. Grinding incisal edge and changing position
of teeth
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14. Too colored teeth to simulate natural teeth
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15. Phonetics-3
 Speech is
affected by the
position of the teeth
and the contour and
bulk of the palate.
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17. The central incisor
 Edges in
contact with the
plane.
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18. The lateral incisor
The edge is l-
2mm short of
plane.
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19. The canine
 Its cusp is in
contact with the
horizontal
plane.
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20. The labial surfaces of the
anterior teeth present a curve
.depending on the ridge
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21. The long
axes of the
teeth are not
made
parallel. If
this done it
will
Appear
artificial and
.unnatural
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22. Lower anterior teeth
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23. General
considerations
The midline of lower anterior as
the upper one.
The teeth are set on the ridge.
The. overlap will be about 1.5
mm.
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24. Vertical and
horizontal
overlap
In natural teeth
there is contact
between upper
and lower teeth
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25. In complete denture 1mm overjet is left
and incisal angle less than 15 degree
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26. The central and lateral
incisors
The incisive
edge 1.5 mm
above plane.
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27. The canine
The incisal tip may be
slightly higher than
the lateral and central
incisor.
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30. The following factors are
considered
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31. The neutral zone-1
the neutral ِ eeth are in
T
zone. This ensures denture
.stability
The cheek and lip press on
the teeth from outside and
the tongue from inside.
The area of equilibrium
between the two forces is
.called the neutral zone
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32. The position of the-2
posterior teeth in
relation to the
alveolar ridge
The posterior teeth are
placed on the ridge crest
especially the mandibular
teeth. This position is
important for lower denture
.stability
If it is necessary to place the
teeth outside the ridge crest
it is done for the maxillary
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. denture D.SIRAG EDDIN AL-HAMADI 32

33. Balanced occlusion-3
It is maximum contact between the
maxillary and mandibular teeth in centric
and eccentric positions.
Eccentric positions include protrusive
position and lateral position in both
.working and balancing sides
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34. There should be maximum contact
.in centric occlusion
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35. Contact during protrusion
At least three widely separated points or
.areas of occlusion must exist
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36. Contact during lateral movement
Working side Balancing side
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37. Contact during
lateral movement
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38. To achieve balance there should be
anteroposterior curve for the posterior teeth
(curve of Spee) and mediolateral curve (curve
(.of Monson
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40. The maxillary posterior teeth
Note the anteroposterior curve.
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41. The posterior teeth buccal surfaces make
contact with a straight line drawn from the
.labial surface of the canine backwards
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43. The mandibular posterior teeth
The mandibular
teeth are set to
occlude with
maxillary teeth
in
anteroposterior
and mediolateral
curves.
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45. 08/29/12 D.SIRAG EDDIN AL-HAMADI 45

46. The buccal cusps of the lower
posterior interdigitate with the
. maxillary central fossae
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47. The palatal cusps
of the upper
posterior teeth
interdigitate with
the central fossae
of the mandibular
teeth.
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49. A) Superior protrusion
((Class II
The lower ridge is narrower than
the upper and associated with a
receding chin.
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50. Setting up the posterior teeth
Setting the upper teeth inside the
ridge does not produce marked
instability
 While setting, the lower teeth
outside the ridge will lead to
instability.
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51. Setting the anterior teeth
The large overjet is preserved.
Angulations of the upper teeth give
the patient a rabbit appearance
Angulations of the lower tend to
unstabilise the denture
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52. B-Inferior protrusion
(Class III)
The lower ridge is broader than
the upper and usually associated
with a protruded chin.
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53. Setting of the posterior
teeth
Cross biting
the posterior
teeth.
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54. Lingual view for cross bite arrangement
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55. Setting of the
posterior teeth
Lower teeth that are narrow buccolingually are
of great advantages
If the upper teeth set outside the ridge a metal
plate should be incorporated in the denture to
prevent fracture.
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56. Setting of the anterior teeth
The anterior teeth in such cases
are best set either edge to edge or
with a negative overjet.
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57. Gum fitted anterior teeth
The absence of the anterior gum work affect
denture retention and wings may be used.
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58. Indications gum fitted upper
anterior teeth
a) When the teeth too prominent.
b) When the gum work presses the
lip out e.g. in tight-lipped patients.
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59. References
Allen AA, Heath JR, Mc Cord: Complete Prosthodontics; Problems, Diagnosis and Management. Mosby-Wolf, London, -1 
.1995
Beresin, V.E. and Schiesser, F. J.: The neutral zone in complete and partial dentures. 2nd ed. St. Louis, The C.V. Mosby - 2
.Company: 1978
. Coleman, R. D. and kaiser, W. B.: The Scientific Bases of Dentistry. Philadelphia, W. B. Sounders; 1966 - 3 
.Craig, R.G.: Restorative Dental Materials. 8 ed. St. Louis, C. V. Mosby Company - 4
th 
.Fenn, H.R.B.; Liddelow, K.P. and Gemson, A.B.: Clinical Dental Prosthetics. 2 ed. London, Staples; 1974 -5 
Geering AH,Kundert M , Kelesy C: Complete denture and overdenture Prosthetics. Theme medical publication Inc. - 6 
.New York, 1993
Grant AR, Heath JR, Mc Cord JF: Complete Prosthodontics; Problems, Diagnosis and Management. Mosby-Wolf, -7 
.London, 1996
Heartwell, C.M. and Rhan, A.G.: Syllabus of Complete Dentures. 3rd ed. Philadelphia, Lea and- 8
.Febiger; 1986
.Sharry, J.J.: Complete denture prosthodontics. 3rd ed. NewYork, McGraw-Hill; 1974- 9 
Sowter, J.B.: Dental laboratory technology: prosthodontic techniques. Chapel Hill, University of North - 10
Sowter, 
.Carolina; 1968
Watt, D.M. and Mac Gregor, A.R.: Designing complete dentures. Philadelphia, W.B. Sounders;-11
.1976
Winkler, S.: Essential of complete Denture Prosthodontics. 2nd ed. PSG Publishing- 12 
.Company; 1988
Zarb, G.A.; Bolender, C.L.; HicKey, J.C. and carlesson, G.E.: Boucher's Prothodontic- 13 
.Treatment for Edentulous Patients. 7th. Ed. St-Louis, The C.V.Mosby Company; 1990
.N, B. All pictures in these slides are copied from the above references and from the internet 
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