Yared G M, Bou Dagher F
Department of Endodontics, Dental School, Lebanese University, Beirut, Lebanon.
J Endod. 1996 Jan;22(1):6-8. doi: 10.1016/s0099-2399(96)80227-5.
This study evaluated the influence of various root canal sealers on the quality of the apical seal of vertically condensed gutta-percha. One hundred and twenty human anterior teeth with single canals were used. After cleaning and shaping to an apical size 30 file, the teeth were divided into 4 equal groups of 30 teeth each and obturated with vertically condensed gutta-percha. In group 1, no sealer was used. In groups 2, 3, and 4, Kerr Pulp Canal Sealer, Roth 801, and AH 26 were used, respectively. Apical microleakage was determined using pressurized fluid filtration measured at different time intervals up to 24 wk. The no-sealer group showed significantly more apical leakage than the other groups. Kerr Pulp Canal Sealer was significantly better than Roth 801 and AH 26 at 24 wk.
本研究评估了各种根管封闭剂对垂直加压牙胶尖根尖封闭质量的影响。使用了120颗单根管的人上前牙。在清理和预备至30号锉的根尖尺寸后，将牙齿分成4组，每组30颗，并用垂直加压牙胶尖进行充填。第1组未使用封闭剂。第2组、第3组和第4组分别使用了 Kerr 牙髓根管封闭剂、Roth 801和AH 26。通过在长达24周的不同时间间隔测量加压流体过滤来确定根尖微渗漏。未使用封闭剂组的根尖渗漏明显多于其他组。在24周时，Kerr牙髓根管封闭剂明显优于Roth 801和AH 26。
