Department of Endodontics, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil.
Nuclear Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, Rio de Janeiro, Brazil.
J Endod. 2018 Jul;44(7):1146-1150. doi: 10.1016/j.joen.2018.03.008. Epub 2018 Jun 1.
The present study aimed to assess canal preparation outcomes achieved by the new Reciproc Blue instrument using micro-computed tomography technology. M-Wire Reciproc was used as a reference instrument for comparison.
Seven pair-matched mesial roots of mandibular molars presenting similar anatomic features of the canal (length, volume, surface area, and configuration) were selected after scanning procedures and assigned to 1 of the 2 groups according to the instrument used, M-Wire Reciproc and Reciproc Blue. After canal instrumentation, the specimens were rescanned, and the registered preoperative and postoperative datasets were examined to evaluate the percentages of removed dentin, untouched canal walls, and degree of canal transportation. Comparisons regarding the above outcomes between the 2 groups were done by using paired t test with the alpha-type set at 5%.
Root canals prepared with conventional M-Wire Reciproc or Reciproc Blue were found to present similar shaping properties with no significant differences in the tested parameters.
M-Wire Reciproc and Blue Reciproc presented similar shaping outcomes.
本研究旨在使用 micro-computed tomography 技术评估新型 Reciproc Blue 器械在根管预备中的效果。M-Wire Reciproc 被用作比较的参考器械。
经过扫描程序后，选择了 7 对具有相似根管解剖特征（长度、体积、表面积和形态）的下颌磨牙近中根，并根据使用的器械将其分为 M-Wire Reciproc 和 Reciproc Blue 两组。根管预备后，对标本进行再次扫描，并检查注册的术前和术后数据集，以评估去除牙本质的百分比、未触及的根管壁和根管偏移程度。使用配对 t 检验对两组之间的上述结果进行比较，α 值设定为 5%。
用传统的 M-Wire Reciproc 或 Reciproc Blue 预备的根管呈现出相似的成形特性，在测试参数方面没有显著差异。
M-Wire Reciproc 和 Blue Reciproc 呈现出相似的成形效果。
