The principal reason for a cavosurface bevel on an

inlay preparation is to

A. remove undermined enamel.

B. improve marginal adaptation.

C. decrease marginal percolation.

D. increase resistance and retention forms. - ANS-B. improve marginal adaptation.

Lichen planus occurs most frequently on the

A. buccal mucosa.

B. tongue.

C. floor of the mouth.

D. gingiva. - ANS-A. buccal mucosa.

The pulpal floor of a Class II cavity is cut

perpendicular to the long axis of the tooth EXCEPT

in the

A. maxillary first premolar.

B. maxillary second premolar.

C. mandibular second premolar.

D. mandibular first premolar. - ANS-D. mandibular first premolar.

Upon examination of an edentulous patient, it is

observed that the tuberosities contact the retromolar

pads at the correct occlusal vertical dimension. The