Department of Endodontics, Grande Rio University, Duque de Caxias, Rio de Janeiro, Brazil.
Department of Endodontics, Rio de Janeiro State University, Rio de Janeiro, Brazil.
Int Endod J. 2018 Jan;51(1):86-91. doi: 10.1111/iej.12788. Epub 2017 May 29.
To evaluate the efficacy of filling material removal from oval-shaped canals after the use of supplementary files (XP-endo Finisher and XP-endo Finisher R) through microcomputed tomographic (micro-CT) analysis.
The root canals of twenty maxillary single-rooted teeth were prepared with Reciproc R25 files and filled with gutta-percha and AH Plus sealer using the continuous wave of condensation technique. The root canals were then retreated using Reciproc R25 and R40 instruments. After this, the specimens were assigned to two groups according to the supplementary cleaning approach, using XP-endo Finisher and XP-endo Finisher R. The surface area and volume of removed filling material was assessed using micro-CT imaging before and after the use of the XP-endo instruments. Data were analysed statistically with a significance level of 5%.
Removal of filling material at 66.8% and 59.4% in volume and 67.3% and 61.4% in surface area was seen for the XP-endo Finisher and the XP-endo Finisher R files, respectively. The amount of filling material removed by both supplementary files was highly significant (P = 0.000). No significant difference in the percentage of removed filling material was detected for the XP-endo instruments (P = 0.636 for volume and P = 0.667 for surface area).
Both XP-endo files were equally effective in the removal of remaining filling material from straight oval-shaped canals. None of the instruments were able to remove all the residual filling material.
通过 microCT 分析评估使用补充锉（XP-endo Finisher 和 XP-endo Finisher R）去除椭圆形根管内充填材料的效果。
将 20 颗上颌单根牙的根管用 Reciproc R25 锉预备并用牙胶和 AH Plus 根管封闭剂进行冷侧压技术充填。然后用 Reciproc R25 和 R40 锉进行根管再处理。之后，根据补充清洁方法，将标本分为两组，分别使用 XP-endo Finisher 和 XP-endo Finisher R。使用 microCT 成像技术在使用 XP-endo 器械前后评估去除的充填材料的表面积和体积。使用 5%的显著水平进行统计数据分析。
XP-endo Finisher 和 XP-endo Finisher R 锉分别去除了 66.8%和 59.4%的体积以及 67.3%和 61.4%的表面积的充填材料。两种补充锉去除的充填材料量均具有高度显著性（P=0.000）。对于 XP-endo 器械，去除的充填材料百分比没有显著差异（体积为 P=0.636，表面积为 P=0.667）。
两种 XP-endo 锉在去除直椭圆形根管内残留的充填材料方面同样有效。没有一种器械能够去除所有残留的充填材料。
