问题
单项选择题
患者，女性，70岁，全牙列缺失，上颌弓偏小，牙槽嵴低平，下颌弓大，牙槽嵴较丰满，下颌弓明显突出于上颌弓之前。
后牙牙合面形态为非解剖式牙是指 （）
A.牙合面牙尖斜度为10°
B.牙合面牙尖斜度为5°
C.牙合面无牙尖
D.牙合面无沟槽
E.牙合面无外展隙
答案
参考答案：C
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患者，女性，70岁，全牙列缺失，上颌弓偏小，牙槽嵴低平，下颌弓大，牙槽嵴较丰满，下颌弓明显突出于上颌弓之前。
后牙牙合面形态为非解剖式牙是指 （）
A.牙合面牙尖斜度为10°
B.牙合面牙尖斜度为5°
C.牙合面无牙尖
D.牙合面无沟槽
E.牙合面无外展隙
参考答案：C
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