1. Principles of complete denture prosthodontics.
DSP 331
Principles of complete denture prosthodontics.
Presented by:
Dr. Tushar Bhagat, MDS

2. Content Introduction & Definition Parts of the complete denture
Denture retention, and stability
What are the displacing forces?
What are the retaining forces available to counteract displacement?
Principles of complete denture prosthodontics.

3. Introduction & definition
A removable dental prosthesis that replaces the entire dentition and associated structures of the maxilla / or mandible and that can be removed by patients own will is termed as removable complete denture.
Principles of complete denture prosthodontics.
Ref: Clinical Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.1

4. Objectives of complete denture
To provide adequate masticatory function
To restore natural appearance
To restore normal speech
Comfort and preservation of supporting structure
Principles of complete denture prosthodontics.
Ref: Clinical Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.1

5. Parts of complete denture
Principles of complete denture prosthodontics.

6. Factors affecting success of CD
Principles of complete denture prosthodontics.

7. Retention of complete denture
Is the quality inherent in a denture that resists the forces of gravity, the adhesiveness of foods, and the forces associated with opening of the mouth.
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.29

8. Factors affecting Retention of complete denture
Physical
Anatomical
Physiological
Mechanical
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.29

9. Factors affecting Retention of complete denture
Physical: these includes;
Adhesion
Cohesion
Atmospheric pressure
Gravity
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.29

10. Factors affecting Retention of complete denture
Physical: these includes;
Adhesion: the forces of attraction existing between dissimilar bodies in close contact. (attraction between saliva and denture base)
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.29

11. Factors affecting Retention of complete denture
Physical: these includes;
Cohesion : the forces of attraction existing between similar bodies in close contact. (surface tension of saliva)
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.29

12. Factors affecting Retention of complete denture
Physical: these includes;
Atmospheric pressure: It is the physical factor of hydrostatic pressure due to the weight of the atmosphere on the earth’s surface.
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.29

13. Factors affecting Retention of complete denture
Physical: these includes;
Gravity : working against upper denture and for the lower denture.
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.29

14. Factors affecting Retention of complete denture
Anatomical factors: these includes;
Shape of edentulous area
Undercuts
Anatomy of border tissues.
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.29

15. Factors affecting Retention of complete denture
Physiological factors: these includes;
Neuromuscular control.
Viscosity and volume of saliva.
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.29

16. Factors affecting Retention of complete denture
Mechanical factors: these includes;
Balanced occlusion.
Contour of the polished surface.
Position of the occlusal plane.
Position of teeth in respect to ridge.
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.29

17. Factors affecting Retention of complete denture
Mechanical factors: these includes;
Balanced occlusion : the bilateral simultaneous, anterior and posterior occlusal contact in centric and eccentric position.
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.30

18. Factors affecting Retention of complete denture
Mechanical factors: these includes;
Contour of polished surface: teeth and the polished surface should be contoured and harmonious with oral structure.
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.30

19. Factors affecting Retention of complete denture
Mechanical factors: these includes;
Position of occlusal plane: occlusal plane of lower denture must be in correct level i.e corner of mouth provide the anterior landmark.
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.30

20. Denture stability
Denture stability : is the quality of denture to be firm, steady and constant in position when forces are applied to it. (especially to resistance against horizontal or rotatory movements)
Principles of complete denture prosthodontics.
Ref: Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.32

21. References
Principles of Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no
Clinical Complete denture prosthodontics by Dr.Moustafa A Hassaballa. P.no.1
Principles of complete denture prosthodontics.

22. Thank you
Principles of complete denture prosthodontics.