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作者已报道用染料渗入法观察四种根管充填料的密封性,它能较精确判定充填料和根管壁间微渗漏。本文采用扫描电镜(SEM)观察根管充填料和根管壁间微缝隙,作定量估算。两者相互补偿,将能更客观判定其密封性。实验材料、牙齿、部分实验方法同前。
The authors have reported using the dye infiltration method to observe the sealing of the four kinds of root canal filling material, which can more accurately determine the microleakage between the filling material and the root canal wall. In this paper, scanning electron microscopy (SEM) observed root canal filling material and the gap between the root canal wall for quantitative estimates. Mutual compensation between the two will be able to more objectively determine the tightness. Experimental materials, teeth, some of the experimental methods with the former.