Among the constraints of mandibular movements, which one can be changed? ()
A. The temporomandibular joint
B. The occlusion of maxillary and mandibular teeth
C. Neural structure
D. Masticatory muscles
E. The shape of the mandible
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What’s definition of overjet? ()
A. The overlapping of anterior teeth maxillary and mandibular detention when the mandible is in intercuspal occlusion.
B. The horizontal distance of maxillary teeth overlapping mandibular teeth when the mandible is in intercuspal occlusion.
C. The vertical distance of maxillary teeth overlapping mandibular teeth when the mandible is in intercuspal occlusion.
During protrusive occlusion, the distance of mandibular movement when the incisal margins of mandibular anterior teeth exceed those of the maxillary anterior teeth.
E. When the mandible is in protrusive occlusion, the distance of mandibular movement when the incisal margins of mandibular anterior teeth are opposite to those of the maxillary anterior teeth.
牙尖交错牙合时上下颌牙齿成一对二交叉咬合关系,例外者是:( )
A. 下颌中切牙与上颌第三磨牙
B. 上颌中切牙与下颌第三磨牙
C. 上颌侧切牙与下颌第三磨牙
D. 上颌尖牙与下颌第三磨牙
E. 没有例外,都是一对二的交叉咬合关系
When the mandible is in intercuspal occlusion, there is one to two intersection relationship of the maxillary and mandibular teeth with the exception of ()
A. mandibular central incisors and maxillary third molars
B. maxillary central incisors and mandibular third molars
C. maxillary lateral incisors and mandibular third molars
D. maxillary canines and mandibular third molars
E. There is no exception
When the mandible is in resting position, the wedge-shaped gap formed by maxillary and mandibular detention is called ()
A. the interproximal space
B. freeway space
C. The occlusal height
D. The inter-arch distance
E. The vertical dimension
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