Among the premolars, which of the following teeth has the highest proportion of having double root canals
A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar
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Which of the following teeth has five cusps on the occlusal surface? ()
A. The maxillary first molar.
B. The maxillary second molar.
C. The maxillary third molar.
D. The mandibular first molar.
E. None of the above.
The malformed central cusp is often found in_______. ()
A. maxillary first premolar
B. maxillary second premolar
C. mandibular first premolar
D. mandibular second premolars
E. the first molar
The "six-year molars" refer to_______. ()
A. the incisors
B. the canines
C. the premolars
D. the first molars
E. none of the above
Which of the following teeth have the cross-shaped developmental grooves? ()
A. Maxillary first molar.
B. Mandibular first molar.
C. Maxillary second molar.
D. Mandibular second molar.
E. Mandibular second premolar.
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