RPD Review Questions

Answer to Question #42


The correct answer is

Incorrect. There is no relationship between the presence of tori and the selection of a metal base.

Correct. The major connector cannot extend below the height of contour of the tori and consequently, there is seldom the 7 mm minimum vertical space needed for a lingual bar.

Incorrect. There is no relationship between tori and the selection of tube teeth.

Incorrect. It is certainly not the BEST answer. However, there is some logic for answer #4. Since the tissue over the tori is very thin and not tolerant to any vertical pressure, one could argue that additional indirect retainers could be used to safeguard against tissue trauma under the major connector. However, #2 is really the best answer.