Weller R N, Kimbrough W F, Anderson R W
Department of Endodontics, School of Dentistry, Medical College of Georgia, Augusta 30912-1244, USA.
J Endod. 1997 Nov;23(11):703-6. doi: 10.1016/S0099-2399(97)80406-2.
The purpose of this study was to directly compare the ability of the three types of Thermafil obturators, the Obtura II thermoplasticized injectable technique, and the lateral condensation technique to obturate a standardized root canal. A split-tooth model was constructed and the root canal was obturated 20 times with each technique. The quality of each obturation was graded according to established criteria of adaptation. Statistical analysis of the results indicated that all the techniques were significantly different from each other (p < 0.0001) except for the plastic and titanium Thermafil groups (p > 0.05), which were similar. Based on the evaluated criteria, the Obtura II injectable technique demonstrated the best adaptation to the prepared root canal. This group was followed in order by the plastic and titanium Thermafil obturators, the stainless steel Thermafil obturators, and finally by the lateral condensation technique.
本研究的目的是直接比较三种类型的热牙胶充填器、Obtura II热塑注射技术和侧向加压技术对标准化根管进行充填的能力。构建了一个劈裂牙模型，每种技术对根管进行20次充填。根据既定的适充标准对每次充填的质量进行分级。结果的统计分析表明，除塑料和钛制热牙胶组（p>0.05）相似外，所有技术之间均存在显著差异（p<0.0001）。根据评估标准，Obtura II注射技术对预备根管的适应性最佳。其次是塑料和钛制热牙胶充填器、不锈钢热牙胶充填器，最后是侧向加压技术。
