In young children, teeth that have recently emerged have weak enamel and are highly susceptible to acid decay.
最近表明，小孩子的牙釉质极易受酸侵蚀。
Second, it can reverse the early stages of acid damage by remineralizing areas that have started to decay.
其次，它能够通过矿化开始腐蚀的区域扭转早期的酸性伤害。
Bacteria living on teeth convert sugar into lactic acid, which erodes enamel and causes tooth decay.
牙齿表面的细菌会把糖转变成乳酸，腐蚀珐琅质并导致蛀牙。
The more sugar you eat, the more acid you will create in your mouth, and the more acidic attacks your teeth are exposed to, the higher the risk of developing tooth decay.
你摄入的糖越多，你口腔里产生的酸类物质也就越多，牙齿也会随之遭受更严重的酸性侵蚀，造成蛀牙的几率也会更大。
A bonus from all that saliva: It neutralizes acid that causes tooth decay.
唾液的好处在于：它能中和导致蛀牙的酸。
The teeth are subject to caries (decay), caused by acid from bacteria In plaque, a yellowish film that builds up on teeth.
牙齿易成为龋齿（蛀牙），由齿面的淡黄色薄膜（齿斑）上的细菌制造出的酸而造成。
The lactic acid in dairy products helps strengthen enamel and prevent decay, and the fat found in cheese helps prevent bacteria bonding to teeth.
奶制品中的乳酸可以增强牙釉质，防止牙齿腐蚀。奶酪中的脂肪还可以防止细菌附着在牙齿上。
Lactic acid can be used as an active ingredient in toothpaste and other oral hygiene products to prevent tooth decay and freshen breath.
乳酸可用作牙膏和其它口腔卫生品的活性物以防龋齿及保持口腔清洁。
Lactic acid can be used as an active ingredient in toothpaste and other oral hygiene products to prevent tooth decay and freshen breath.
乳酸可用作牙膏和其它口腔卫生品的活性物以防龋齿及保持口腔清洁。
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