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作者应用透射型电子显微镜,观察了80颗人恒牙牙骨质内Sharpey纤维的超微构造。80颗恒牙(13～73岁)中,病理室解剖标本44颗,为方便矫治和埋伏齿而拔除者36颗。其中具有咬合功能牙和无咬合功能牙各占40颗。为观察年龄增加变化,将具有咬合功能牙分小于30岁(Ⅰ组)和大于或等于30岁(Ⅱ组)两组,每组各为20颗牙。将标本固定,包埋,切片,镜检观察,同时计算sharpey纤维牙骨质总面积中的比例,进行统
The authors used transmission electron microscopy to observe the ultrastructure of Sharpey fibers in the cementum of 80 individuals. Among the 80 permanent teeth (13-73 years old), 44 pathological anatomical specimens were obtained, of which 36 were removed for the convenience of orthodontics and ambush teeth. One with occlusal function and non-occlusal function teeth each 40. To observe changes in age, two groups of teeth with bite function less than 30 years old (group I) and 30 years or older (group II), each with 20 teeth each, were examined. The specimens were fixed, embedded, sliced, microscopic examination, while calculating the proportion of total area of sharpey fiber cement, the system