Which of the following descriptions about the retruded contact position is incorrect?()
A. The mandible moves backward and downward about 1mm from the intercuspal position
B. It existed in everyone
C. There is partial contact with the inclined planes of the cusps of the posterior teeth
D. The condyloid process is located at the rearmost of the mandibular fossa
E. It is the physiological rearmost position of the mandible
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The infraorbital foramen is the injection position of nerve blocking anesthesia for ()
A. the supraorbital nerve
B. the infraorbital nerve
C. the orbital nerve
D. the posterior superior alveolar nerve
E. none of the above
The important landmark of the blocking anesthesia for the posterior superior alveolar nerve is the ()
A. the maxillary tuberosity
B. the alveolar foramen
C. the infra zygomatic crest
D. the canine fossa
E. the genial tubercles
Which tooth has a thicker labio-buccal lamella than its lingual lamella? ()
A. the maxillary first premolar
B. the maxillary first molar
C. the mandibular first molar
D. the mandibular second premolar
E. the mandibular canine
Which tooth root apex nearest to the floor of the maxillary sinus?()
A. the maxillary first molar
B. the maxillary second molar
C. the maxillary third molar
D. the maxillary second premolar
E. the maxillary second premolar to the maxillary third molar
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