Shokouhinejad Noushin, Sharifian Mohammad R, Jafari Maral, Sabeti Mohammad A
Department of Endodontics, School of Dentistry/Dental Research Center, Tehran University of Medical Sciences, Tehran, Iran.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2010 Nov;110(5):e88-92. doi: 10.1016/j.tripleo.2010.05.069. Epub 2010 Sep 27.
The purpose of this study was to compare the bond strength of Resilon/Epiphany self-etch (SE) and gutta-percha/AH26 after different irrigation protocols.
Extracted single-rooted human teeth were divided into 4 groups and prepared. According to irrigation protocols, groups were: 5.25% NaOCl followed by 17% ethylenediaminetetraacetic acid (EDTA) (groups 1 and 2); and 1.3% NaOCl followed by MTAD (a mixture of tetracycline isomer, an acid, and a detergent) (groups 3 and 4). The root canals were obturated with either gutta-percha/AH26 (groups 1 and 3) or Resilon/Epiphany SE (groups 2 and 4). Push-out bond strength and failure modes were determined.
Gutta-percha/AH26 showed significantly higher bond strength than Resilon/Epiphany SE. The group with 5.25% NaOCl + EDTA and gutta-percha had a significantly higher bond strength than all of the other groups (P < .05); 1.3% NaOCl + MTAD with gutta-percha showed significantly higher bond strength than 5.25% NaOCl + EDTA with Resilon and 1.3% NaOCl + MTAD with Resilon. There was no significant difference between the bond strengths of the Resilon groups (P > .05). The failure mode for all of the experimental groups was mainly adhesive.
Irrigation with 5.25% NaOCl + EDTA can be a better conditioner before using gutta-percha/AH26. The bond strength of Resilon/Epiphany SE was not different after irrigation with 5.25% NaOCl + EDTA or 1.3% NaOCl + MTAD.
本研究旨在比较不同冲洗方案后Resilon/Epiphany自酸蚀（SE）与牙胶/AH26的粘结强度。
将拔除的单根人牙分为4组并进行预备。根据冲洗方案，分组如下：5.25%次氯酸钠（NaOCl）随后用17%乙二胺四乙酸（EDTA）（第1组和第2组）；以及1.3% NaOCl随后用MTAD（四环素异构体、一种酸和一种去污剂的混合物）（第3组和第4组）。根管分别用牙胶/AH26（第1组和第3组）或Resilon/Epiphany SE（第2组和第4组）进行充填。测定推出粘结强度和失败模式。
牙胶/AH26显示出比Resilon/Epiphany SE显著更高的粘结强度。5.25% NaOCl + EDTA与牙胶组的粘结强度显著高于所有其他组（P <.05）；1.3% NaOCl + MTAD与牙胶显示出比5.25% NaOCl + EDTA与Resilon以及1.3% NaOCl + MTAD与Resilon显著更高的粘结强度。Resilon组之间的粘结强度无显著差异（P >.05）。所有实验组的失败模式主要为粘结性。
在使用牙胶/AH26之前，用5.25% NaOCl + EDTA冲洗可能是一种更好的预处理方法。用5.25% NaOCl + EDTA或1.3% NaOCl + MTAD冲洗后，Resilon/Epiphany SE的粘结强度没有差异。
