RPD Review Questions

Questions 41-50


Question #41

A mandibular lingual bar major connector such as the one shown in the RPD to the right requires a minimum of _____mm of vertical height between the gingival margin and the floor of the mouth.

4

5

7

8

 


Question 42

The presence of mandibular lingual tori would indicate the need for

a metal base

lingual plating

tube teeth

extra indirect retainers

 


Question 43

The illustration to the right shows a framework for a mandibular class II RPD. The indirect retainer on tooth 21 functions when

the patient chews on something hard

the patient chews on something soft

the patient chews on something sticky

the patient bites the bullet

 


Question 44

True or False

An anterior-posterior palatal strap maxillary major connector has greater strength and rigidity than a horseshoe design.

True

False

 


Question 45

Your patient has the mandibular arch form shown to the right. A rest on which tooth would be the most effective indirect retainer?

20

21

22

27

 


Question 46

Your patient exhibits the mandibular class II modification 1 arch shown to the right. Tooth #30 is tilted mesiolinguallly and has very little tissue undercut on the lingual. What is the best clasp for this situation?

Cast circumferential clasp utilizing a distolingual undercut

Cast I-bar utilizing a mesiolingual undercut

Cast ring clasp utilizing a mesiolingual undercut

Wrought wire circumferential clasp utilizing a distolingual undercut.

 


Question 47

Rigid metal retention is associated with

a dual path of insertion

a class IV RPD

the need for excellent esthetics

all of the above

 


Question 48

True or False

The palatal strap maxillary major connector is primarily used in short span maxillary class III modification 1 RPDs.

True

False

 


Question 49

Your patient has the class I arch shown to the right. The axis of rotation is most frequently determined by:

the placement (location) of the primary rests

the type of clasp arms selected

the placement of the minor connectors

the placement of the indirect retainers

 


Question 50

In maxillary RPDs, the bead line is approximately _______mm thick (deep).

4

3

2

1

 


On to Questions 51-60