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龋病多发生于牙齿的窝沟部位，（）是预防窝沟龋的有效方法。
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龋病多发生于牙齿的窝沟部位，（）是预防窝沟龋的有效方法。
时间：2021-09-02 15:12
关键词：
联大
开封大学
口腔医学
口腔内科学
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窝沟封闭
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