Teeth have a hard surface layer called enamel.
牙齿有一层叫做釉质的坚硬表层。
Enamel is almost completely transparent in the near-infrared spectrum, allowing OCT to create highly detailed images of teeth as well as soft tissue.
由于珐琅质在近红外光谱端近乎完全透明，因此oct可以形成牙齿和软组织的高精确图像。
The tooth also had all the components of normal teeth, including enamel, crown and root, and connective fibers to fix it to bone.
培育的牙齿还具备正常牙齿的所有组成成分，包括釉质、齿冠和牙根，以及使其固定于骨头的结缔组织纤维。
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。
But the high sucrose content of orange juice attacks the enamel on your teeth and can increase the risk of Type 2 diabetes.
不过桔子汁高蔗糖含量会损坏牙齿的珐琅质，也能增加患2型糖尿病的风险。
A study review in the British dental Journal (BDJ) found that sugar-free foods and drinks contain acidic additives that may cause dental problems by eroding the enamel on consumers' teeth.
BDJ(英国牙科杂志)的一篇研究评论发现，含有酸性添加剂的无糖食物和饮料可能会腐蚀牙齿珐琅质。
Dr Tafforeau first saw the light, as it were, in 2000, when he found himself unhappy at having to cut up the teeth of fossil primates in order to study the fine details of their enamel.
Tafforeau博士第一次发现加速器的妙用，还是在2000年时。那时他十分厌倦于为了研究灵掌类牙齿釉质而必须切下化石上的牙齿。
The reason is that the acidity in food and beverages causes tooth enamel to soften, and brushing right after eating an acidic meal strips enamel from the teeth, leaving them vulnerable to cavities.
食物和饮料中的酸性会造成牙齿釉质软化，马上刷牙容易得蛀牙。
Acid attacks can happen as a result of plaque bacteria acting on the sugars in our diet, or as a direct result of the acids in food dissolving away the enamel on the surfaces of our teeth.
酸袭击可能发生，由于牙菌斑的细菌作用于我们饮食中的糖，或作为一个直接结果，酸溶解食物上溶掉了在我们牙齿表面上的珐琅。
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。
In some cases, teeth have to be capped or replaced because of thinning enamel.
某些情况下，由于牙釉质变薄，牙齿需要做牙套保护或者拔除。
After growing them, they found their structures had matured into the components that make teeth, including dentin, enamel, dental pulp, blood vessels, and periodontal ligaments.
这些细胞长成后，研究人员发现它们的结构已经分化成熟为各种成分并形成了牙本质、釉质、牙髓、血管及牙周韧带。
ScienceDaily (Sep. 6, 2009) - it's been a mystery: how can our teeth withstand such an enormous amount of pressure, over many years, when tooth enamel is only about as strong as glass?
科学日报(2009年9月6日)——当牙齿上的牙釉质大约只有玻璃般强硬时，我们的牙齿这么多年来是怎样经受住一个如此巨大的压力的？
Over-whitening can also cause teeth to become thin and brittle and can lead to high sensitivity and discoloration as tooth enamel becomes translucent.
美白牙齿过度，会使牙齿变得薄弱。同时，由于牙釉质变为半透明状，会导致牙齿高度敏感、变色。
Plaque is the sticky film of bacteria that forms on the teeth and produces acids which dissolve the tooth enamel.
牙垢膜是由牙齿表面细菌形成的黏膜，会制造酸性物质并侵蚀珐琅质。
Theobromine appears to help with repairing enamel and protecting teeth from further erosion by acids.
可可碱似乎能修复牙釉质并保护牙齿免收酸性物质的进一步腐蚀。
Because the citric acid can erode tooth enamel, either hold off on brushing your teeth after drinking lemon water or brush your teeth before drinking it.
柠檬酸可以腐蚀牙釉质，所以要么在喝了柠檬水之后稍停片刻再刷牙，要么先刷牙再喝柠檬水。
Saliva also bathes teeth in calcium, phosphate and fluoride, which strengthen tooth enamel.
唾液也能洗刷使牙釉质更加坚固的钙，磷酸盐和氟化物。
After growing them they found their structures had matured into the components that make teeth including dentin enamel dental pulp blood vessels and periodontal ligaments.
这些细胞长成后，研究人员发现它们的结构已经分化成熟为各种成分并形成了牙本质、釉质、牙髓、血管及牙周韧带。
Brush too soon after eating - as enamel on teeth is softened after eating especially with sugary foods - it's best to wait an hour before brushing which allows the tooth to harden up more.
进食后——尤其是吃了甜食后——牙釉质会软化，所以最好过一个小时等待牙釉质恢复后再刷牙。
Staining from coffee is very superficial, effecting just the biofilm, a thin layer of bacteria which covers the teeth and gums, and doesn't penetrate through the enamel itself.
咖啡的着色是浅表性的，仅仅影响菌膜——覆盖牙齿和牙龈的一个很薄的细菌层，并不能穿透牙釉质。
They are abrasive and can wear your enamel away and in the long-term lead to sensitivity and darkening of your teeth as the enamel wears and the inner amber-coloured dentine becomes visible.
它们都有研磨作用，会磨损牙釉质，长此以往会导致牙齿敏感和发黑，因为牙釉质磨损会暴露出里面黄褐色的牙质。
This can result in yellowing teeth - because the acid strips the enamel and starts to reveal darker-coloured dentine underneath.
此外氯还会导致一口黄牙，因为酸性物会剥蚀掉釉质，致使后层颜色较深的牙质显露出来。
But dentists said some of the methods can erode the enamel covering of the teeth making them appear darker rather than whiter.
但牙医提醒说，有些方法可能会损伤覆盖在牙齿上的牙釉质，反而让牙齿显得更黑。
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。
Once the bacteria stick to the enamel, they trigger a process called demineralisation - they turn sugar in the diet into a harmful acid that starts to create holes in the teeth.
它们一旦附着在牙齿的珐琅质上，就会引发一种被称为去矿化作用的过程--- 它们把饮食中的糖转化成有害的酸并在牙齿上腐蚀出洞眼。
Mottled enamel will also occur on the healthy teeth which have grown in the high fluoride area.
在高氟地区即使是生长健康的牙齿还可以患氟牙症。
Mottled enamel will also occur on the healthy teeth which have grown in the high fluoride area.
在高氟地区即使是生长健康的牙齿还可以患氟牙症。
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