Prosthodontics Cram Flashcards
What factors affect the retention of a complete denture
Physical
- adhesion
- cohesion
- atmospheric pressure
- gravity
Mechanical
Anatomical
Physiological
- Neuromuscular control
What is the RPD systems of design
- Outline saddles
- Identify support - rests
- Provide retention - clasps/guideplanes
- Provide reciprocation + bracing
- Major connector
- Provide indirect retention to resist rotation
What are the Kennedy classifications?
1 - Bilateral free end saddle
2 - Unilateral free end saddle
3 - Unilateral bounded posterior
4 - Anterior bounded saddle
Define support
Resistance to vertical movement towards tissue (press occlusally for sink)
Define retention
Resistance to displacement away from tissue (pull centrals)
Define stability
Resistance to horizontal movement (rocks)
Define indirect retention
Resistance to rotational displacement of denture
Define reciprocation
Each clasp unit has an opposing element to retentive clasp arm to prevent pressure from clasp acting on tooth
What is FWS
RVD-OVD
Ridge classifications
1 - Dentate
2 - Post Xla
3 - Broad alveolar processes
4 - Knife edge
5 - Flat ridge
6 - Submerged ridge
Clasp mm for CoCr
0.25
Clasp mm for gold
0.5
Clasp mm for SS
0.75
Clinical stages for complete dentures
Primary
Masters
Jaw regi
Tooth trial
Delivery
Clinical stages for RPDs
Primary
Masters
FW +/- jaw regi
Tooth trial
Delivery
