RPD Review Questions

Questions 31-40

Question #31

True or False

In designing a RPD framework for the partially edentulous arch to the right---if at all possible, circumferential clasps should be used on the numbers 28 and 30. They would be preferred to infrabulge retainers.




Question 32

True or False

Determining areas for physiologic relief is accomplished by marking the framework intraorally. This process includes adjusting the casting to allow for functional movement on Class I and II RPDs to relieve stress on the terminal abutment teeth.




Question 33

Reciprocation between bracing and retentive components requires

I-bars be used

bracing components contact after retentive components

correct timing of contact during seating and removal of the RPD

both 2 and 3


Question 34

Infrabulge clasps originate

above the height of contour

below the height of contour

above the 0.01" undercut

above the occlusal surface of most premolars


Question 35

True or False

A modified palatal plate is used in maxillary class II cases and may or may not include lingual plating




Question 36

All of the following clasps are infrabulge clasps except?


Modified T-bar

Roach clasp

Akers clasp


Question 37

A clasp assembly should

have a retentive arm with adequate length and taper for flexibility

have a retentive arm that terminates in an undercut

have elements that considered together, provide 180 degree encirclement

all of the above


Question 38

The partial denture that will be completed on the framework shown to the right can do all of the following except

transfer stresses to the abutment teeth

transfer stresses across the arch

minimize supereruption of opposing teeth

act as an orthodontic retainer for the lower incisor teeth.


Question 39

True or False

Maxillary class II RPDs do not have an axis of rotation because no functional movement will occur over the hard midline suture of the palate.




Question 40

In a Class III modification 1 RPD, the rests are usually placed

on the canines

away from the modification space

in the area of the opposing occlusal contact

adjacent to the modification space.


On to questions 41 to 50