RPD components overview

Question 1

what is an RPD

Answer 1

• 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 2

what are the RPD obejctives

Answer 2

• restore anatomical defect
• restore function
• restore occlusal plane
• provide posterior occlusal support
• improve esthetics
• splint periodontally compromised teeth

Question 3

what are parts of the metal framework

Answer 3

-major connector
- minor connector
- rests
- direct retaininers
- indirect retainers

Question 4

what makes up the denture based

Answer 4

-replacement teeth
- supporting base material

Question 5

what is the major connector

Answer 5

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

Question 6

what are the types of major connectors in maxillary

Answer 6

• palatal strap
• anterio- posterior palatal strap
• complete palate
• U -shaped connector

Question 7

what are the types of major connectors in mandibular

Answer 7

• lingual bar
• lingual plate

Question 8

what is the minor connector

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 types of minor connectors

Answer 9

• guiding plane plates
• meshwork
• any unit connecting any type of rest to the major connector

Question 10

what is a rest

Answer 10

a component of a RPD that serves to transfer forces occurring agianst the prosthesis down the long axis of the abutment

Question 11

what is a rest seat

Answer 11

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

Question 12

what is the proximal plate

Answer 12

• a rigid extension from the major connector or base
• contacts the proximal surface of an abutment tooth

Question 13

what do direct retainers do

Answer 13

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

Question 14

what are direct retainers

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 are indirect retainers

Answer 15

a component of a RPD that assists a direct retainer in preventing displacement of a distal extension denture based by functioning through lever action on the opposite side of the fulcrum line

Question 16

what do indirect retainers do and when are they necessary

Answer 16

• connects to a major connector and is some form of rest
• class I or Class II situations

Question 17

what is the denture based

Answer 17

part of the RPD that rests on the foundation tissues and to which teeth are attached

Question 18

what is a denture base made of

Answer 18

polymer/plastic or metal

Question 19

what is the acrylic resin attachment and what is its function

Answer 19

• the part of an RPD which rests on the oral mucosa and to which the teeth are attached
• transmit stress to the supporting structures

Question 20

what are the ways the framework attaches to the resin base

Answer 20

lattice retention and mesh retention