这种污染的一些极端副作用会导致皮肤灼伤、皮疹和牙釉质 腐蚀)。 (Some extreme side-effects of this contamination have resulted in skin burns, rashes, and eroded tooth enamel ).2. 轻度2牙釉质 的白色不透明区更广泛,但不超过牙面的50%. Mild- The white opaque areas in the enamel of the teeth are more extensive. but do not involve as much as 50 percent of the tooth. . 他们测量了牙釉质 中稳定钙同位素的比例,这是婴儿母乳摄入量的函数。 They measured the proportions of their stable calcium isotopes in the tooth enamel , which are a function of the mother milk intake by infants. 频繁呕吐会侵蚀牙釉质 ,尤其是上排门牙舌头侧边部位。 Frequent vomiting can erode the enamel of the teeth , especially on the tongue side of the upper front teeth. . 轻度2牙釉质 的白色不透明区更广泛,但不超过牙面的50%. The white opaque areas in the enamel of the teeth are more extensive but do not involve as much as 50% of the tooth. .
他们丈量了牙釉质 中安稳钙同位素的份额,这是婴儿母乳摄入量的函数。 They measured the proportions of their stable calcium isotopes in the tooth enamel , which are a function of the mother milk intake by infants. 对“弓箭手”牙釉质 的分析发现,他来自阿尔卑斯地区。 Scientific analysis of the Amesbury Archer's teeth , show that he came from the Alps. 种运动饮料的测试中,除了2种(具有较高的钙含量)以外,均被发现可以引起牙釉质 的腐蚀。 Of eight sports drinks tested, all but two(those with higher calcium content) were found to cause loss of dental enamel . On hunger there is a change in the composition of saliva, which can lead to the dissolution of tooth enamel . 种运动饮料的测试中,除了2种(具有较高的钙含量)以外,均被发现可以引起牙釉质 的腐蚀。 Of 8 sports drinks tested, all but 2(those with higher calcium content) were found to cause loss of dental enamel . 研究发现,大多数软饮料和运动饮料导致牙釉质 软化三到五分之一。 The majority of soft drinks and sports drinks caused softening of dental enamel by 30 to 50 percent. 宝石和类似材料如琥珀和珊瑚,贵金属,珠子和贝壳已被广泛使用,并且牙釉质 通常很重要。 Gemstones and similar materials such as amber and coral, precious metals, beads, and shells have been widely used, and enamelhas often been important. 研究发现,大多数软饮料和运动饮料导致牙釉质 软化三到五分之一。 The studies found that the majority of soft drinks and sports drinks led to softening of dental enamel by between a third and a half. 迪吉克豪岑预计,葡聚糖酶的专门抑制剂可能有助于防止细菌附着在牙釉质 上。 Dijkhuizen thinks specific inhibitors of the glucansucrase enzyme may help to prevent attachment of the bacteria to the tooth enamel . 它承认了特定种类口香糖(例如一种含有可使牙釉质 变得强韧的乳酸钙(英语:Calciumlactate)的无糖口香糖)对健康的益处。 It recognised the health benefits of certain gums, such as a brand of sugar-free gum that contains calcium lactate to strengthen tooth enamel . 这项新的研究--利用观察食物颗粒和牙釉质 之间微观相互作用的实验--证明即使是最坚硬的植物组织也不会磨损灵长类动物的牙齿。 This new research- using experiments looking at microscopic interactions between food particles and enamel - demonstrates that even the hardest plant tissues scarcely wear down primate teeth. 大多数的食物已经含有能够产生酸性物质的成分,因此,你的牙齿与这些成分的接触越少,侵蚀牙釉质 的牙菌斑酸性物质也就越少。 Most meals already contain acid-producing ingredients, so the less you expose your teeth to these ingredients, the less plaque acids attack your tooth enamel . What determines the color of the teeth ? This will help prevent damage to your teeth . This helps prevent damage to your teeth .
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