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窝沟封闭成功的关键是

单选题
2021-09-01 19:31
A、清洁牙面要彻底
B、酸蚀时间要足
C、酸蚀剂量要适当
D、酸蚀剂要冲洗干净
E、封闭前保持牙面干燥,不被唾液污染
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正确答案
E

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