Endodontic Department, Faculty of Dentistry, Suez Canal University, Ismailia, Egypt.
Endodontic Department, Faculty of Dental Medicine Assiut Branch, Al-Azhar University, Assiut, Egypt.
BMC Oral Health. 2023 Jan 24;23(1):38. doi: 10.1186/s12903-023-02735-3.
To compare the retreatment efficiency of XP-endo Shaper and R-Endo files in curved root canals using ImageJ software.
Forty extracted mandibular first molars with curved mesial canals (25°-35°) were chosen. Access cavities, preparation and obturation of root canals were performed. Roots were randomly distributed into two groups corresponding to the retreatment files used. Group 1 retreated with XP-endo Shaper file, and group 2 retreated with R-Endo files. Each root was sectioned and photographed. ImageJ software was used to estimate the percentage of residual filling material that existed on the three root canal segments. Mann-Whitney U and the Kruskal-Wallis tests were used to compare the percentages of residual filling material between the teeth segments (P < .05).
The R-Endo group showed a significantly higher median percentage of residual filling material than the XP-endo Shaper group. In both groups, the coronal segments had the highest median of the residual filling material, followed by the middle and apical segments.
XP-endo Shaper is significantly more effective than R-Endo in removing root canal filling materials in the coronal, middle, and apical segments.
使用 ImageJ 软件比较 XP-endo Shaper 和 R-Endo 锉在弯曲根管中的再治疗效率。
选择 40 颗具有近中弯曲根管（25°-35°）的下颌第一磨牙。进行开髓、根管预备和充填。将根随机分为两组，分别使用再治疗锉。第 1 组用 XP-endo Shaper 锉进行再治疗，第 2 组用 R-Endo 锉进行再治疗。每个根都被切成片并拍照。使用 ImageJ 软件估计三个根管段存在的残余填充材料的百分比。使用 Mann-Whitney U 和 Kruskal-Wallis 检验比较牙齿段之间残余填充材料的百分比（P<.05）。
R-Endo 组的残余填充材料的中位数百分比明显高于 XP-endo Shaper 组。在两组中，冠部段的残余填充材料中位数最高，其次是中部和根尖部。
XP-endo Shaper 在去除根管冠、中、根尖部的填充材料方面明显优于 R-Endo。
