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当牙齿中的矿质被细菌产生的酸性物质腐蚀时,可发生龋齿.牙齿大部分是由矿物质组成的,主要为钙羟磷灰石(占牙齿表面珐琅质的95%,内部牙本质65%是矿物质),还含有蛋白质、骨胶原和少量水份.因此,防止牙齿的矿质脱失(脱矿作用)或补充矿质,则牙齿很少被腐蚀。按照传统习惯,人们一直采用少食糖及有规律刷牙的方法来预防龋齿.口腔细菌可使糖转化成酸,从而腐蚀牙齿.细菌残留在牙齿上的时间越长,特别是如果细菌与食物构成膜(即斑)堆积在牙齿表面的话,则龋齿发生的机会越多. 牙齿开始被腐蚀时,保持无牙斑,这样可以延缓甚至逆转牙齿的腐蚀。目前,一些牙科医生用X线检
Dental caries can occur when the mineral in the tooth is corroded by the acidic material produced by the bacterium Dental caries mostly consist of minerals, mainly calcium hydroxyapatite (95% of the tooth surface enamel, 65% of the internal dentin Minerals), but also proteins, collagen, and small amounts of water.Therefore, teeth are rarely eroded by preventing mineral loss (demineralization) or mineral replenishment. Traditionally, people have been using less sugar and regularly brushing teeth to prevent dental caries.Oral bacteria can make sugar into acid, which corrodes teeth.The longer the bacteria remain in the teeth, especially if the bacteria and food constitute a film (Ie spot) buildup on the surface of the teeth, the more chances for decayed teeth are. The teeth begin to be eroded with no plaque, which can delay or even reverse tooth erosion. At present, some dentists use X-ray