The tooth with the smallest pulp cavity is _________.
A. maxillary central incisor
B. maxillary lateral incisor
C. mandibular central incisor
D. mandibular lateral incisor
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The deciduous teeth and the permanent teeth are similar in the shape of their pulp cavities. But proportionally, the deciduous teeth have the smaller pulp cavities, thinner walls and taller pulp horns than the permanent teeth.
Biting force means
A. the maximal force that the masticatory muscles can exert
B. the actual pressure on the teeth during masticatory movements
C. the actual force generated by the masticatory muscles during masticatory movements
D. the maximal tolerance of periodontal ligament
E. the minimal force required to crush food
下列哪一项属于正常咀嚼周期的特征:()
A. 牙咬合接触时,下颌运动无明显的瞬息停止
B. 咀嚼周期形态不稳定
C. 咀嚼周期速度变化大
D. 运动中没有节律
E. 轨迹图面删具有似滴泪滴删水的形态
关于异常的咀嚼周期,下列哪一点是错误的?( )没学
A. 牙咬合接触时,下颌运动无明显的瞬息停止
B. 咀嚼肌所能发挥的最大力
C. 咀嚼周期的形态不稳定
D. 咀嚼运动时,牙所承受的实际压力
E. 咀嚼周期的速度变化甚大
F. 咀嚼运动时,咀嚼肌实际发生之力
G. 咀嚼肌肌电图的放电期与静止期分期明显 更改: 14:力是指:B
H. 牙周膜的最大耐受力
I. 粉碎食物所需要的最小力
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