RPD parts, purpose, physics

Question 1

What is the goal of an RPD

Answer 1

• replace missing teeth
• improve function
• support compromised teeth
• Do no harm

Question 2

What are major connectors

Answer 2

The portion of the RPD that goes from one side of the arch to the other and connects all the parts

Question 3

What are rests

Answer 3

the portion of the RPD that sits into the rest seats that are cut into the abutment teeth. these resist occlusal forces and prevent the RPD from sliding gingivally.

Question 4

What are rest seats

Answer 4

a prep cut into an abutment tooth into which the rests on the RPD will sit.

Question 5

What are direct retainers

Answer 5

They are the retentive portion of the RPD that resists removal forces. (Clasp assemblies)

Question 6

What is indirect retention

Answer 6

rests that are placed perpendicularly to, and far from the axis of rotation in a Class 1 or 2 RPD. They resist leverage when chewing sticky foods

Question 7

What is a proximal plate

Answer 7

the portion of an RPD that rests against the walls of the teeth opposing edentulous areas (guide planes). they determine the path of insertion of the RPD.

Question 8

What are guide planes

Answer 8

Vertical planes cut onto the surface of teeth facing edentulous areas. they articulate with the proximal plates of the RPD and determine the path of insertion.

Question 9

What are minor connectors

Answer 9

the extensions of the major connectors that connect each component of the RPD to the major connector.

Question 10

What is the denture base

Answer 10

the portion of the denture that sits on the gingiva.