School of Dentistry, Federal University of Bahia, Brazil, Av. Araujo Pinho n. 62, Canela, Salvador, BA, CEP 40110-150, Brazil.
Clin Oral Investig. 2013 Jan;17(1):97-103. doi: 10.1007/s00784-012-0675-7. Epub 2012 Jan 19.
This study was aimed to evaluate different endodontic obturation techniques (Thermafil, lateral condensation, and Tagger's hybrid technique) regarding the homogeneity of the obturation radiopacity.
Seventy roots of human upper central incisors were filled using the Thermafil system, lateral condensation. and Tagger's hybrid technique. Radiopacity of the filling was evaluated based on mean of grey levels, and its homogeneity was assessed by the coefficient of variation (CV), analyzing the histograms obtained of digitized and digital radiographs.
The increase in mean grey levels (p < 0.001) and reduction in the CV (p < 0.05) were higher for Tagger's hybrid technique compared with other methods.
Tagger's hybrid technique provided better homogeneity of the obturation radiopacity and better apical sealing compared with lateral condensation technique.
The results suggest that Tagger's hybrid technique provided the best compaction of the root canal filling material, an important factor for the sealing of obturations and, consequently, for the effectiveness of treatment.
本研究旨在评价不同的根管充填技术（Thermafil、侧方加压和 Tagger 混合技术）在充填的射线不透性均匀性方面的差异。
使用 Thermafil 系统、侧方加压和 Tagger 混合技术对 70 个人上颌中切牙的根管进行充填。根据灰度平均值评估充填的射线不透性，并通过变异系数（CV）评估其均匀性，分析数字化和数字射线照片获得的直方图。
与其他方法相比，Tagger 混合技术的灰度平均值增加（p<0.001），CV 降低（p<0.05）。
与侧方加压技术相比，Tagger 混合技术在根管充填射线不透性的均匀性和根尖封闭方面具有更好的效果。
研究结果表明，Tagger 混合技术对根管充填材料的压实效果最好，这是密封效果和治疗效果的重要因素。
