RPD Review Questions

Answer to Question #158


The correct answer is

Incorrect. An altered cast cannot be done because the metal base must be incorporated into the framework.

Incorrect. A stock tray should not be used for the final impression as it is important to get an accurate, undistorted impression of the residual ridges and surrounding soft tissues.

Correct. A custom tray should be used as it is important to get an accurate, undistorted impression of the residual ridges and surrounding soft tissues. The metal base will be incorporated into the framework.

Incorrect. Interocclusal records would be made before tooth selection. The records could be made either before or after framework fabrication (usually after but if the interocclusal distance is very small and metal teeth are to be incorporated with the base, records would have to be made before the framework is fabricated).