RPD Review Questions

Answer to Question #102


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Incorrect. A circumferential clasp cannot be used when the undercut is located on the side of the tooth (distal in this case) where the clasp originates.

Incorrect. A circumferential clasp cannot be used when the undercut is located on the side of the tooth (distal in this case) where the clasp originates. In addition, WW clasps are seldom used on tooth-borne RPDs.

Incorrect. In order for an I-bar to be used, the undercut should be just forward of the greatest mesiodistal curvature of the facial surface.

Correct. When the undercut is adjacent to the edentulous area, a modified T-bar is an excellent choice, assuming there are not contraindications to the use of an infrabulge clasp.