RPD Review Questions

Answer to Question #11


The best answer is

Incorrect. Cast clasps should not be used anterior to the axis of rotation.

Incorrect. #2 is a true statement but not the BEST answer. The most commonly used solution would be to use a WW clasp. The WW clasp would provide stress-relief through its increased flexibility: an important attribute in this case since the abutment tooth is in front of the axis of rotation.

Incorrect. #3 is a true statement but not the BEST answer. If the patient is an experienced RPD wearer and retention is of minor importance, one might consider leaving the retentive arm off tooth #6. This would be more likely if esthetics were a major consideration. A good option might be to include the WW clasp initially and check the need for the clasp after delivery. This would be done by merely bending the clasp slightly away from the tooth and having the patient wear the prosthesis for a few days. If the patient managed the RPD without retention from the clasp, it could be cut off.

Correct. #4 is the BEST answer. Both 2 and 3 are true statements.