单项选择题
A.5% B.10% C.15% D.20% E.25%
A.5%~10% B.10%~15% C.15%~20% D.20%~25% E.30%
A.在唇面切1/3处,从唇舌经的1/2画线沿45°角切削 B.其次唇面中1/3处适当切削 C.邻面留出1.5mm的切端瓷位置 D.在唇面体瓷切2/3面上,用回切刀形成2~3个纵形"旷字型凹槽 E.回切时注意形成唇面弯曲弧度
A.0.05~0.1mm B.0.1~0.2mm C.0.2~0.25mm D.0.25~0.3mm E.0.3~0.4mm
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