RPD Review Questions

Answer to Question #126

The correct answer is

Incorrect. If the plating ends below the height of contour, there will be a space between the superior edge of the plating and the tooth---a food trap.

Correct. The plating must end EXACTLY at the height of contour.

Incorrect. If the plating ends above the height of contour, it will pre-empt the planned mesial rest. It will be a rest on an inclined plane (which is no good) and the I-bar will lie in front of the axis of rotation (which is also no good).