皮皮学，免费搜题
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【单选题】
覆牙合的定义是（ ）A.
牙尖交错牙合时一上下前牙发生重叠关系
B.
牙尖交错牙合时，上颌牙下颌牙唇颊面问的水平距离
C.
牙尖交错牙合时，上颌牙下颌牙唇颊面间的垂直距离
D.
牙尖交错牙合时，上颌牙下颌牙舌面间的水平距离
E.
前伸运动时，下前牙切缘超过上前牙切缘的水平距离
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皮皮学刷刷变学霸
举一反三
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A.
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B.
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C.
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