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Tooth decay will not spread it?

　　According to internationally renowned expert Professor Cui Rongshuo oral description, tooth decay is contagious, is currently not clear in medicine clinical validation. Generally caused by tooth decay or gum disease, bacterial infection is a necessary condition, but not the only condition. Poor eating habits, such as excessive sugar intake, not pay attention to oral hygiene, will lead to tooth decay.

原文翻譯如下：