Singh Chandra Vijay, Rao S Anitha, Chandrashekar V
Department of Conservative Dentistry and Endodontics, Mamata Dental College, Khammam, Andhra Pradesh, India.
J Conserv Dent. 2012 Jul;15(3):261-4. doi: 10.4103/0972-0707.97954.
The aim of this study was to examine in vitro penetration depth of two resin-based sealers (AH plus and Resino Seal) and Zinc Oxide Eugenol sealer into the dentinal tubules after removing smear layer by passive ultrasonic irrigation.
Thirty freshly extracted maxillary central incisors were used. The teeth were decoronated, working length established and prepared upto size 40 file. Each root was subjected to passive ultrasonic irrigation with 2.5% sodium hypochlorite. Three different sealers and gutta-percha were used for obturation. Roots were sectioned using hard tissue microtome. These sections were gold sputtered and examined under scanning electron microscope.
Statistical analyses of the data were performed using Kruskal-Wallis and Mann-Whitney tests. Statistically significant difference was found between AH Plus sealer and Resino Seal sealer and Zinc Oxide Eugenol sealer.
The results showed that AH Plus had maximum penetration depth into dentinal tubules.
本研究的目的是检测在通过被动超声冲洗去除玷污层后，两种树脂类封闭剂（AH plus和Resino Seal）以及氧化锌丁香酚封闭剂在牙本质小管中的体外渗透深度。
使用30颗新鲜拔除的上颌中切牙。对牙齿进行去冠处理，确定工作长度并预备至40号锉。每根牙根用2.5%次氯酸钠进行被动超声冲洗。使用三种不同的封闭剂和牙胶进行根管充填。使用硬组织切片机对牙根进行切片。这些切片进行喷金处理并在扫描电子显微镜下观察。
使用Kruskal-Wallis和Mann-Whitney检验对数据进行统计学分析。发现AH Plus封闭剂与Resino Seal封闭剂和氧化锌丁香酚封闭剂之间存在统计学显著差异。
结果表明，AH Plus在牙本质小管中的渗透深度最大。
