Which of the following descriptions about the main function of lateral pterygoid muscle is incorrect ()
A. mouth-opening action
B. protruding the mandible
C. lateral movement of the mandible
D. elevate the mandible
E. lower the mandible
查看答案
Which of the following muscles elevates and protrudes the mandible () the masseter muscle
A. the temporal muscle
B. the mandibular hyoid muscle
C. the lateral pterygoid muscle
D. the genihyoid muscle
Which of the following statements about the anatomical occlusal plane is correct()
A. It is an imaginary plane that connects the mesial approximal point of the mandibular central incisors to the distal buccal cusps of bilateral first molars.
B. It is an imaginary plane that connects the mesial approximal point of the maxillary central incisors to the distal buccal cusps of the bilateral first molars.
C. It is an imaginary plane that connects the mesial approximal point of the mandibular central incisors to the distal buccal cusps of the bilateral last molars.
D. It is an imaginary plane that connects the mesial approximal point of the maxillary central incisors to the distal buccal cusps of bilateral last molars.
E. None of the above is correct.
Which of the following statements about the curve of Spee is correct()
A. It is the sagittal curve of occlusion of the maxilla.
B. It is the sagittal curve of occlusion of the mandible.
C. It is the transverse curve of occlusion of the maxilla.
D. It is the transverse curve of occlusion of the mandible
E. None of the above is correct.
Which of the following descriptions of normal signs of the intercuspal occlusion is incorrect()
A. Each tooth is in contact with two teeth on the opposite jaw.
B. The relationship of canines is normal.
C. The relationship of first molars is neutral.
D. The overbite and overjet relationships of anterior and posterior teeth are normal.
E. The midline of the upper and lower dentition is aligned with the frenulum of the upper lip.
微信支付 
支付宝支付