Which of the following statements is a characteristic of the normal chewing cycle: ()
A. There is no obvious momentary stop of mandibular movements during occlusal contacts.
B. The shape of the chewing cycle is unstable.
C. The speed of the chewing cycle varies a lot.
D. There is no rhythm in the movement.
E. The path is tear-shaped.
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There are several common masticatory movements, except for: ()
A. alternative bilateral chewing
B. chewing on both sides
C. anterior teeth chewing
D. chewing on the left side
E. chewing on the right side
There are 4 main factors that control mandibular movements, except for: ()
A. bilateral temporomandibular joints
B. the occlusal contact relationship of the teeth
C. blood supply
D. neutral structure
E. muscle structure
Masticatory efficiency refers to: ()
A. the time required to chew a certain amount of food
B. the amount of chewed food in a certain period of time
C. the ability to chew food in a certain period of time
D. the ability to chew a certain amount of food
E. the degree of chewing a certain amount of food in a certain period of time
As for the abnormal chewing cycle, which of the following is incorrect? ()
A. There is no obvious momentary stop of mandibular movement during occlusal contacts.
B. The shape during the chewing cycle is unstable.
C. The speed of the chewing cycle changes greatly.
D. The distinction of the discharging and resting phases of the masticatory muscle EMG is significant.
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