Aoki S, Takase Y, Ishikawa T
Tokyo Dental College.
Bull Tokyo Dent Coll. 1991 Nov;32(4):171-81.
Histological studies on the effect of lining methods using a alpha-TCP (TC) and a VLC Dycal (LD) were reported previously. In this report, SEM and electron-probe microanalyzer observations were utilized to determine the effects of lining methods. SEM observations were made on longitudinal sections prepared by a freeze fracture method, using 30 vital dog teeth and 5 vital human teeth. In the LD group, several kinds of crystal growth were seen on surfaces of the material and dentinal wall. In the TC group, the exfoliated space area filled up with rod-shaped crystals. An electron-probe microanalyzer was employed to examine the crystal elements observed in the interface or the exfoliated space area. Our findings indicated that lining appeared to fill the gaps with crystal growth, block stimuli which result from bacterial invasion into the dentinal tubules, and reinforce the superficial dentinal zone.
先前已有关于使用α-磷酸三钙（TC）和VLC氢氧化钙（LD）进行垫底方法效果的组织学研究报道。在本报告中，利用扫描电子显微镜（SEM）和电子探针微分析仪观察来确定垫底方法的效果。对通过冷冻断裂法制备的纵向切片进行SEM观察，使用了30颗活犬牙和5颗活人牙。在LD组中，在材料表面和牙本质壁上可见几种晶体生长。在TC组中，脱落的间隙区域充满了棒状晶体。使用电子探针微分析仪检查在界面或脱落间隙区域观察到的晶体元素。我们的研究结果表明，垫底似乎通过晶体生长填充间隙，阻断细菌侵入牙本质小管产生的刺激，并增强牙本质表层区域。
