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牙釉质表面的超微结构对于釉质的表面物理化学性质、对于细菌在牙面的积聚和形成菌斑均有重要意义。以往的研究已经证明,牙釉质表层在牙齿萌出之后,经一定时间从不成熟到成熟,其化学成分和矿化程度均有所变化。我们在对埋伏牙、初萌牙和成熟牙(萌出三年以上的牙)作扫描电镜观察时发现,牙齿萌出之后随时间推移,釉质表面形态也发生变化。埋伏牙和初萌牙釉质表面结构疏松、多孔,这一现象可能是儿童期易患龋齿的重要因素之一。材料与方法材料:所观察的牙齿标本是用于其它实验的正常对照部分,未做特殊处理。有埋伏智齿、尖牙、正畸减数双尖牙、智齿等,各
The ultrastructure of the enamel surface is of great importance to the surface physico-chemical properties of the enamel for the accumulation of bacteria in the tooth surface and the formation of plaque. Previous studies have shown that the surface of enamel after tooth eruption, after a certain period of time from immature to mature, the chemical composition and mineralization have changed. In scanning electron microscopy of impacted teeth, adorable teeth and mature teeth (eruptions of more than three years old), we found that the morphology of the enamel surface also changed over time after tooth eruption. Embryonic teeth and early bud enamel surface loose structure, porous, this phenomenon may be susceptible to childhood caries one of the important factors. Materials and Methods Materials: The observed dental specimens were normal control sections used for other experiments without special treatment. There are ambush wisdom teeth, fangs, orthodontic double minus canine teeth, wisdom teeth, etc., each