悬空式桥体龈面与牙槽嵴黏膜的距离不少于( )A.1mm B.2mm C.3mm D.4mm E.5mm

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问题 悬空式桥体龈面与牙槽嵴黏膜的距离不少于(   )

选项 A.1mm
B.2mm
C.3mm
D.4mm
E.5mm

答案C

解析
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