前牙内收1mm，需要间隙A.1mm B.1.5mm C.2mm D.2.5mm E.0.9mm

admin2020-12-24 64

问题前牙内收1mm，需要间隙

选项 A.1mm
B.1.5mm
C.2mm
D.2.5mm
E.0.9mm

答案C

解析

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