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汉语拼音：yòu zhì

牙冠表面的一层硬组织，主要成分是磷酸钙和碳酸钙，此外还含有氟和一些有机质。有保护牙齿免受磨损的作用。旧称珐琅质。

釉质 [yòu zhì]

1. 一种用某些矿物材料烧成的像釉的物质。用于涂在铜质或银质器物表面或用来制造景泰蓝、证章、纪念章等。∥也作「珐琅质」。部分词典也译作「珐琅质」。

• Scientists say the toothpastes do make enamel more acid-resistant -- but not enough to protect you if you guzzle soda all day.

  不过，专家同时表示，虽然此类牙膏确实能提高牙釉质的耐酸性，但如果你整天狂饮苏打水的话，牙膏也是没有用的。

• Therefore, the results of this study does not support Gottleib's proteolytic theory of caries, especially in case of enamel ones.

  结果提示在牙釉质龋病变中，蛋白溶解现象不是主要的。

• The addition of fluoride to the adhesive did not significantly reduce the incidence of enamel decalcification.

  此外氟的胶粘剂没有显着降低发病率的釉质脱钙。

• Thus the prevention of enamel demineralization during orthodontic treatment has been a chief problem for orthodontists to consider.

  因此，预防正畸治疗中的牙釉质脱矿的发生就成为正畸医师首先要考虑的问题。

• The dissolving(demineralization) and re-building(remineralization) of the surface of enamel layer is a persistent process.

  牙釉质表层的溶解（脱矿）和再建（再矿化）是一个持续的过程。

• But if the decay continues and breaks through the surface of the enamel, the damage is permanent.

  但是如果龋坏继续进行穿过表面的牙釉质，将会形成永久性损害。

• "They already had teeth in the upper jaw, so they had the enamel, dentine and other necessities, " he said.

  它们的上颌已经有牙齿了，所以长牙的必要条件已经具备，如牙釉质、牙本质和其他。

• Related studies suggested that the inhibition of Chinese nutgall on enamel caries possibly due to its effect on enamel matrix.

  相关的研究也表明具有明确抑龋效果的中药五倍子可能通过作用于釉质有机质而达到其抑制脱矿的作用。

• The company says the term 'strengthens enamel' on the label refers to making teeth more chemically resistant to acid.

  该公司表示，产品包装上所说的“强化牙釉质”指的是从化学的角度提高牙齿的耐酸性。