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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 the A. maxillary first premolar. B. maxillary second premolar. C. mandibular second premolar. D. mandibular first premolar. - 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 treatment of choice is toA. reduce the retromolar pads surgically to provide the necessary clearance. B. reduce the tuberosities surgically to provide the necessary clearance. C. construct new dentures at an increased occlusal vertical dimension to gain the necessary clearance. D. proceed with construction of the denture and reduce the posterior extension of the mandibular denture to eliminate interferences. - B. reduce the tuberosities surgically to provide the necessary clearance. In the absence of "Hanks balanced salt solution", what is the most appropriate media to transport an avulsed tooth? A. Saliva. B. Milk. C. Saline. D. Tap water. - B. Milk. The setting of a zinc-phosphate cement can best be retarded by A. decreasing the particle size. B. increasing the concentration of water in the liquid. C. increasing the rate of addition of the powder to the liquid. D. cooling the glass mixing slab. - D. cooling the g