Drinking sugar. Bacteria in your mouth that feed on the sugar in sodas and sweetened fruit drinks make acids that attack tooth enamel for up to 20 minutes after you're done drinking, says the American Dental Association. Repeated attacks weaken enamel, leading to cavities and sensitive teeth. Research also suggests that the high acidity of energy and sports drinks can erode enamel. The best tooth-friendly thirst-quencher is water — preferably with fluoride. This mineral occurs naturally in all water sources, and research shows it helps prevent cavities. Check bottled water labels for fluoride; if you use a filter for tap water, get one that doesn't remove fluoride.
饮用糖水。美国牙科协会表示,在苏打水和甜性水果饮料里滋生的你嘴里的细菌可产生许多酸性物质,喝掉这类饮料后酸性物质会攻击牙釉质长达20分钟以上。反复攻击脆弱的牙釉质可导致蛀牙和牙齿敏感。研究还表明,酸度高的能量和运动饮料可以侵蚀牙釉质。最好的利于牙齿解决口渴的东西是水 - 最好是带氟的。这种矿物质自然产生于所有水源里,研究表明氟有助于防止蛀牙。你可在瓶装水的标签上看到氟的标记,如果你要使用自来水过滤器的话,请使用那种不会去氟的。
Using old brushes. They're less effective at cleaning; plus the bristles may breed bacteria. Replace your brush every three to four months, sooner if it's frayed, and right after you've had a cold, flu, mouth infection or sore throat. More tips: Choose a soft-bristled brush with a small head to get at hard-to-reach spots; brush in circular motions with fluoride toothpaste.
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