Which of the following is called the anterior tooth?()
A. the canine
B. the maxillary premolar
C. the mandibular premolar
D. the maxillary molar
E. the mandibular molar
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Which of the following teeth has two and a half cusps on its buccal side?()
A. the maxillary first molar
B. the mandibular first molar
C. the maxillary second molar
D. the mandibular second molar
E. the third molar
Which tooth usually serves as a landmark for locating the mental foramen?()
A. the mandibular central incisor
B. the mandibular lateral incisor
C. the mandibular canine
D. the mandibular premolars
E. the mandibular molars
Which of the following descriptions about the maxillary first premolar is correct?()
A. It is the smallest premolar.
B. Most of the roots are divided into the buccal root and the lingual root at the middle or apical third of the root.
C. There can be three cusps on the occlusal surface.
D. The buccal cusp inclines toward the mesial.
E. None of the above.
The lack of food massage will cause gingival atrophy. This is mainly due to the()
A. zero convexity of the dental crown
B. oversized convexity of the dental crown
C. undersized convexity of the dental crown
D. normal convexity of the dental crown
E. irregular dental crown
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