The lowest point of the Spee curve is located at ()
A. the mesiobuccal cusp of the mandibular second molar
B. the distobuccal cusp of the mandibular first molar
C. the mesiobuccal cusp of the mandibular first molar
D. the distobuccal cusp of the mandibular second molar
E. the distobuccal cusp of the mandibular second premolar
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The incorrect description about the range of border movement of the mandible is ()
A. the opening border movement is at 48.0 mm ± 15.5 mm
B. the protrusive border movement is at 10.5 mm ± 2.2 mm
C. the retruding border movement is at 2.0 mm
D. the right-lateral border movement is at 10.0 mm ± 2.0 mm
E. the left-lateral border movement is at 10.0 mm ± 2.0 mm
The surface landmark of the local anesthesia for the nasopalatine nerve is ()
A. the incisive papillae
B. the greater palatine foramen
C. the lesser palatine foramen
D. the mental foramen
E. none of the above
How to decide whether the mandibular central incisor is the left or the right one? ()
A. The mesial incisal angle is nearly right-angle
B. The mesial contact area is closer to the incisal angle
C. The distal incisal angle is an obtuse angle
D. The distal contact area is far from the incisal angle
E. The elongated depression on the distal surface of the root is deeper than that of the mesial surface of the root
Which of the following statements about the dentin is/are incorrect: ()
A. It is softer than the enamel.
B. It is beneath the enamel and cementum.
C. It is white and transparent.
D. It surrounds the pulp cavity.
E. It makes up the bulk of the tooth.
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