Intro to RPD

Question 1

What are the objectives of RPDs?

Answer 1

 Restore anatomical defect
 Restore function
 Restore occlusal plane
 Provide posterior occlusal support
 Improve esthetics
 Splint periodontally compromised teeth

Question 2

What is a removable partial denture

Answer 2

A dental prosthesis that restores one or more but not all of the natural teeth and/or associated parts and is supported by the teeth and/or mucosa and can be removed from the mouth and replaced at will

Question 3

What are the parts of the metal framework for the RPD?

Answer 3

-Major connector
-Minor connectors
-Rests
-Direct retainers
-Indirect retainers

Question 4

What is the major connector for an RPD?

Answer 4

The component of an RPD that joins the units on one side of the dental arch with the units on the opposite side

Question 5

What are the parts of the denture base for an RPD?

Answer 5

-Replacement teeth
-Supporting base Material

Question 6

What are the types of major connectors for a maxillary RPD?

Answer 6

 Palatal strap
 Anterio-posterior Palatal Strap
 Complete Palate
 U-shaped (Horseshoe) connector

Question 7

What are the types of major connectors for a mandibular RPD?

Answer 7

 Lingual bar
 Lingual plate

• also labial plate

Question 8

What is the minor connector for an RPD?

Answer 8

The connecting link between the major connector or base of a removable partial denture and the other units of the prosthesis, such as direct and indirect retainers and rests.

Question 9

What are the three types of minor connectors?

Answer 9

• guiding plane plates
• meshwork (to hold acrylic resin)
• any unit connecting any type of rest to the major connector

Question 10

What is a rest for the RPD?

Answer 10

A component of a removable partial denture that serves to transfer forces occurring against the prosthesis down the long axis of the abutment teeth

Question 11

What is a rest seat in a RPD?

Answer 11

The prepared surface of a tooth or restoration to receive the rest, not a part of framework

Question 12

What is the proximal plate for an RPD?

Answer 12

 A rigid extension from the major connector or base
 Contacts the proximal surface of an abutment tooth

Question 13

What is a direct retainer?

Answer 13

A component of a removable partial denture used to retain and prevent dislodgement

Question 14

What is the clasp assembly on an RPD?

Answer 14

• Two arms or other pieces, joined by a body which may connect a rest
• May act as a retainer or stabilizer

Question 15

What is an indirect retainer?

Answer 15

A component of a removable partial denture that assists a direct retainer(s) in preventing displacement of a distal extension denture base by functioning through lever action on the opposite side of the fulcrum line

Question 16

Indirect retainers are always necessary in class _______ situations

Answer 16

Class I and II

Question 17

What does an indirect retainer usually connect to?

Answer 17

Usually connects to a major connector and is some form of rest

Question 18

What can the denture base for an RPD be made of?

Answer 18

Polymer/Plastic or Metal

Question 19

What is an acrylic resin attachment?

Answer 19

The part of a RPD which rests on the oral mucosa and to which the teeth are attached

Question 20

What is the function of an acrylic resin attachment?

Answer 20

Transmit stress to the supporting structures

Question 21

What allows for denture base retention?

Answer 21

framework to which the resin base is attached

Question 22

What type of teeth can be used in an RPD?

Answer 22

• denture teeth (plastic or porcelain)
• metal

Question 23

What are the two types of denture base retention where the resin base attaches?

Answer 23

• lattice retention
• mesh retention