题目内容:
圆锥型套筒冠固位体内冠厚度一般是 ( )
A.0.4mm B.0.3mm C.0.5mm D.0.15mm E.0.2mm
参考答案:
圆锥型套筒冠固位体内冠厚度一般是 ( )
A.0.4mm B.0.3mm C.0.5mm D.0.15mm E.0.2mm