RPD Review Questions

Answer to Question #125


The correct answer is

Correct. In its current location, there is the possibility that the entire clasp assembly could move upward and backward, allowing the I-bar to escape the undercut without flexing. If this occurred, there would be no retention.

Incorrect. It is already too far distal. It needs to be moved anteriorly just in front of the greatest mesiodistal curvature of the facial surface.

Incorrect. The I-bar cannot extend above the survey line or it will not release during functional movements of the extension base.

Incorrect. There IS a problem. The I-bar is positioned too far distally.