问题
单项选择题
铸造前腭杆前缘距离余留牙牙龈缘的距离
A.≥4mm
B.≥3mm
C.≥7mm
D.≥6mm
E.≥5mm
答案
参考答案:D
铸造前腭杆前缘距离余留牙牙龈缘的距离
A.≥4mm
B.≥3mm
C.≥7mm
D.≥6mm
E.≥5mm
参考答案:D
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