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Exam (elaborations)
2022 NDEB_SOLVED Questions with 100% Correct Answers
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. - B. improve marginal adaptation. 
 
Lichen planus occurs most frequently on the 
A. buccal mucosa. 
B. tongue. 
C. floor of the mouth. 
D. gingiva. - A. buccal mucosa. 
 
The pulpal floor of a Class II cavity is cut 
perpendicular to the long axis of the tooth EXCEPT 
in th...