Michanowicz A E, Michanowicz J P, Michanowicz A M, Czonstkowsky M, Zullo T P
J Endod. 1989 Dec;15(12):602-7. doi: 10.1016/S0099-2399(89)80159-1.
An injectable thermoplasticized gutta-percha system (Ultrafil) was used to fill 50 teeth which were monitored radiographically over a period of 24 months. An equal number of teeth were filled with the lateral condensation technique and used as controls. Radiographic evidence of success was determined at a 24-month recall. The results were subjected to a 2 x 2 analysis of variance (control versus experimental/before and after treatment. There was a significant amount of repair irrespective of obturation procedure (p greater than 0.0001). Thirteen teeth in the experimental group randomly filled with sealer showed that the sealer did not influence repair.
使用一种可注射的热塑牙胶系统（Ultrafil）填充50颗牙齿，并在24个月的时间内进行影像学监测。用侧向加压技术填充相同数量的牙齿作为对照。在24个月的复查时确定影像学上的成功证据。对结果进行2×2方差分析（对照组与试验组/治疗前后）。无论充填方法如何，均有大量修复（p>0.0001）。试验组中随机使用封闭剂充填的13颗牙齿显示，封闭剂不影响修复。
