问题
单项选择题 案例分析题
患者男，
缺失，余留牙未见异常，可摘局部义齿修复，
做基牙，采用铸造卡环
为孤立基牙，应该采用何种卡环（）
A.双臂卡环
B.单臂卡环
C.对半卡环
D.下返卡环
E.RPI卡环
答案
参考答案：C
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患者男，缺失，余留牙未见异常，可摘局部义齿修复，做基牙，采用铸造卡环
为孤立基牙，应该采用何种卡环（）
A.双臂卡环
B.单臂卡环
C.对半卡环
D.下返卡环
E.RPI卡环
参考答案：C
| 完形填空。 |
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