Hamdan Rami, Michetti Jérôme, Pinchon Déborah, Diemer Franck, Georgelin-Gurgel Marie
DDS. Service d'Odontologie Conservatrice-Endodontie, Faculté de Chirurgie Dentaire, Toulouse and the CHU de Toulouse, 3 Chemin des Maraîchers, 31400 Toulouse, France.
MDS. Service d'Odontologie Conservatrice-Endodontie, Faculté de Chirurgie Dentaire, Toulouse and the CHU de Toulouse, 3 Chemin des Maraîchers, 31400 Toulouse, France and IRIT - UMR CNRS 5505, Avenue de l'étudiant, 31400 Toulouse, France.
J Clin Exp Dent. 2017 Jul 1;9(7):e855-e860. doi: 10.4317/jced.53962. eCollection 2017 Jul.
The aim was to compare the efficacy of the passive ultrasonic irrigation PUI and the Xp-endo Finisher (FKG-Dentaire, La-Chaux-de-Fonds, Switzerland) in removing the calcium hydroxide paste from root canals and from the apical third.
Sixty-eight root canals of single-rooted teeth were shaped using the BT-Race files (FKG-Dentaire, La-Chaux-de-Fonds, Switzerland). Ca(OH)2 was placed in all samples except for the negative control group (n=4). Remaining teeth were randomly divided into three groups: G1-Xp (n=30), G2-PUI (n=30) and the positive control group (n=4). Removal procedure consisted of three repeated one-minute-cycles. Samples were split longitudinally, photos of halves were taken at X6.4 magnification and were analyzed using the ImageJ-Software (The National Institutes of Health NIH, Bethesda, Maryland, USA) to calculate the percentage of surfaces with residual Ca(OH)2; the results were compared using the Wilcoxon-Mann Whitney test. Photos of the apical thirds were taken at X16 and X40 magnifications and were scored by two examiners from (0) to (4). Scores of the apical third were compared using the Fisher test.
The Xp-endo Finisher removed completely the Ca(OH)2 dressing from four teeth (13.33%) whereas the PUI in one tooth (3.33%). The mean values of the remaining Ca(OH)2 were (2.1%, 3.6%) respectively and the difference was not significant (= 0.195). Both examiners found the Xp-endo Finisher more efficient in the apical third and the difference was significant; = (0.025, 0.047) respectively.
The Xp-endo Finisher showed a superiority over the PUI in removing the Ca(OH)2 from the apical third after 3 minutes of activation. Calcium hydroxide removal, Passive ultrasonic irrigation, Xp-endo Finisher.
目的是比较被动超声冲洗（PUI）和Xp-endo Finisher（FKG-Dentaire，瑞士拉绍德封）从根管及根尖三分之一处去除氢氧化钙糊剂的效果。
使用BT-Race锉（FKG-Dentaire，瑞士拉绍德封）对68颗单根牙的根管进行预备。除阴性对照组（n = 4）外，所有样本均放置氢氧化钙（Ca(OH)₂）。其余牙齿随机分为三组：G1-Xp组（n = 30）、G2-PUI组（n = 30）和阳性对照组（n = 4）。去除过程包括三个重复的一分钟循环。样本纵向劈开，在6.4倍放大率下拍摄两半的照片，并使用ImageJ软件（美国国立卫生研究院，马里兰州贝塞斯达）进行分析，以计算残留Ca(OH)₂的表面百分比；结果采用Wilcoxon-Mann Whitney检验进行比较。在16倍和40倍放大率下拍摄根尖三分之一处的照片，并由两名检查者从（0）到（4）进行评分。根尖三分之一处的评分采用Fisher检验进行比较。
Xp-endo Finisher从四颗牙齿（13.33%）中完全去除了Ca(OH)₂敷料，而PUI从一颗牙齿（3.33%）中完全去除。其余Ca(OH)₂的平均值分别为（2.1%，3.6%），差异无统计学意义（P = 0.195）。两名检查者均发现Xp-endo Finisher在根尖三分之一处更有效，差异有统计学意义；P值分别为（0.025，0.047）。
激活3分钟后，Xp-endo Finisher在从根尖三分之一处去除Ca(OH)₂方面显示出优于PUI的效果。氢氧化钙去除、被动超声冲洗、Xp-endo Finisher。
