Rouhani Armita, Ghoddusi Jamileh, Naghavi Neda, Al-Lawati Ghadir
Dental Research Center, Department of Endodontics, Faculty of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran.
General Practitioner, Oman, Oman.
Eur J Dent. 2013 Oct;7(4):423-428. doi: 10.4103/1305-7456.120673.
The purpose of this study was to compare the depth of dentinal tubule sealer penetration in the apical thirds of severely curved root canals obturated with Resilon/Epiphany self-etch (SE) or gutta-percha/AH Plus using scanning electron microscopy.
A total of 34 extracted human mandibular molars with 25-40° curvature of the mesial root canal were selected for this study. After preparation, the mesiobuccal canals were randomly obturated with gutta-percha and AH Plus sealer or Resilon and Epiphany SE sealer. Sealer penetration was evaluated in 2 mm sections of the apical thirds of roots using scanning electron microscopy. Data were analyzed using the independent t-test and Mann-Whitney U-test, with significance set at P < 0.05.
Mean tubular penetration depth did not differ significantly between Resilon SE (172.22 μm) and AH Plus (122.18 μm; P > 0.05). The density of sealer tags in the apical thirds of root canals was also equivalent (P > 0.05).
Average penetration into dentinal tubules in the apical thirds of severely curved roots did not differ significantly between Epiphany SE and AH Plus.
本研究旨在使用扫描电子显微镜比较用Resilon/Epiphany自酸蚀（SE）或牙胶/AH Plus封闭的严重弯曲根管根尖三分之一处牙本质小管封闭剂的渗透深度。
本研究共选取34颗拔除的人类下颌磨牙，其近中根管弯曲度为25 - 40°。预备后，近中颊根管随机用牙胶和AH Plus封闭剂或Resilon和Epiphany SE封闭剂进行封闭。使用扫描电子显微镜在根尖三分之一处的2mm根段评估封闭剂的渗透情况。数据采用独立t检验和曼-惠特尼U检验进行分析，显著性设定为P < 0.05。
Resilon SE（172.22μm）和AH Plus（122.18μm；P > 0.05）之间的平均小管渗透深度无显著差异。根管根尖三分之一处封闭剂标签的密度也相当（P > 0.05）。
Epiphany SE和AH Plus在严重弯曲根管根尖三分之一处牙本质小管中的平均渗透无显著差异。
