RPD Review Questions

Answer to Question #46


The correct answer is

Incorrect. Due to the mesiolingual tilt of the tooth, it is unlikely that there will be a usable distolingual undercut.

Correct. The mesiolingual I-bar will work very well. It must be on the mesiolingual corner of the tooth and it must emanate from the inferior border of the major connector so that it has adequate length to be flexible.

Incorrect. This is not the best selection unless there is a severe tissue undercut that will cause the mesiolingual I-bar to stand out in the floor of the mouth and irritate the tongue.

Incorrect. Due to the mesiolingual tilt of the tooth it is unlikely that there will be a usable distolingual undercut. In addition, there is no reason to use a WW clasp in this situation---no need for increased flexibility or stress-breaking.