【单选题】【消耗次数：1】
下列不是深覆牙合原因的是（）
①
下颌顺时针旋转生长
②
后牙萌出不足
③
下切牙过长
④
下颌功能性后缩
⑤
前牙槽高度发育过度
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以下哪项不符合下颌磨牙牙合贴面的牙体预备要求（）
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牙合面预备时在舌尖制备功能尖斜面
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舌尖形成0.5mm的无角肩台
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