RPD Review Questions

Answer to Question #2

The best answer is


INCORRECT. Although plating may help to prevent this situation from occurring, definitive rest seats under the plating would still be required.

INCORRECT. Poor oral hygiene can contribute to tissue breakdown. However, this type of damage is caused by trauma from the downward movement of the RPD during function.

CORRECT. A rest preparation and rest are essential to proper functioning of the RPD. The damage shown in the illustration is primarily caused by movement of the RPD toward the tissues during function. Such damage would not have occurred if a good rest seat and rest were present.

INCORRECT. The type of clasp arm has nothing to do with tissue trauma of this type.