Drinking lots of water or chewing sugarless gum can also help.

多喝水或者嚼无糖口香糖也会有所帮助。

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The nation's largest dental group said chewing sugarless gum for 20 minutes after each meal can reduce tooth decay.

国家最大的牙科小组说在每顿饭后咀嚼无糖的口香糖20分钟可以减少牙齿腐蚀。

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The American Dental Association says on its Web site that "chewing sugarless gum for 20 minutes following meals can help prevent tooth decay" and recommends looking for gum with its ADA-approved seal.

CNN: Chew on this: Gum may be good for body, mind