In the permanent teeth, the teeth with the largest biting force and the smallest biting force are usually ()
A. The second molar is the largest, and the lateral incisor is the smallest.
B. The second molar is the largest, and the central incisor is the smallest.
C. The canine is the largest, and the lateral incisor is the smallest.
D. The first molar is the largest, and the lateral incisor is the smallest.
E. None of the above
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The power source of masticatory movement is ()
A. teeth
B. mandibular movements
C. muscles
D. TMJ
E. None of the above
The most beneficial biological lever for the masticatory system is ()
A. class Ⅰ
B. class Ⅱ
C. class Ⅲ
D. All of the above
E. None of the above
Which of the following is the best choice to improve masticatory efficiency? ()
A. Eat more food.
B. Extend the masticatory time.
C. Speed up masticatory power.
D. Restore the normal function of the affected teeth.
E. None of the above.
The attrition is ()
A. non-physiological
B. the physiological phenomenon of the natural wearing of the hard tissue of the teeth
C. caused by tooth brushing
D. All of the above
E. None of the above.
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