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。
But if the decay continues and breaks through the surface of the enamel, the damage is permanent.
但对于二十世纪四十年代中期以后出生的人来说，一旦知道其牙釉质何时形成，还有第二项技术能提供其相当确切的年龄(精确到一年内)。
But for people born since the mid-1940s, there is a second technique that can deliver a fairly precise age (within about one year) of when a tooth's enamel was laid down.
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。
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。
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.
本文描述了在釉质人工龋形成过程中，表层的各种改变，包括层板状病变。
The paper gives a description of several changes of the surface layer during formation of artificial caries in enamel.
方法：以全唾液、腮腺唾液、颌下舌下腺唾液和纯化的MG1对实验牙釉质表面进行体外孵育以形成唾液获得性膜，观察此膜抗釉质脱矿作用。
Methods: After formed the enamel pellicles with saliva and MG1 in vitro, it was evaluated that the role of saliva and MG1 against enamel demineralization.
探讨早期釉质龋中釉质微晶的溶解方式及病变体部的形成机制。
To investigate the carious dissolution mechanism of individual enamel crystals and formation mechanism of the body of the lesion in incipient enamel caries.
方法测试和比较含氟牙釉质粘接剂及不含氟牙釉质粘接剂的剪切强度以及扫描电镜下粘接剂渗入酸蚀后牙釉质表面形成的树脂钉突长度。
Methods To test and compare the shear bond strength and the penetration depth of resin tags of fluoride-releasing orthodontic adhesives with those of the traditional orthodontic adhesive.
随后其表达随细胞分化的成熟和牙釉质、牙本质基质形成的进展而逐渐下降。
The expression was down-regulated with enamel and dentin matrix formation being up - regulated.
随后其表达随细胞分化的成熟和牙釉质、牙本质基质形成的进展而逐渐下降。
The expression was down-regulated with enamel and dentin matrix formation being up - regulated.
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