单项选择题
A1型题 前牙烤瓷熔附金属冠牙体预备时,唇面牙体组织应磨除 ()
A.0.5~1.0mm
B.1.2~1.5mm
C.1.6~1.8mm
D.1.8~2.0mm
E.2.0~2.5mm
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单项选择题
A.0.5~1.0mm
B.1.2~1.5mm
C.1.6~1.8mm
D.1.8~2.0mm
E.2.0~2.5mm
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