Nawal Ruchika Roongta, Parande Mahantesh, Sehgal Ritu, Rao Nageswar R, Naik Aisha
Department of Conservative Dentistry and Endodontics, Maulana Azad Institute of Dental Sciences, New Delhi, India.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011 Mar;111(3):387-93. doi: 10.1016/j.tripleo.2010.09.070. Epub 2011 Jan 8.
This in vitro study was conducted to evaluate and compare the microbial leakage of a new obturation system: Guttaflow with resin-based Resilon cones and Epiphany sealer, keeping gutta-percha with AH plus sealer as the standard.
The microbial leakage was tested using Enterococcus faecalis ATCC 29,212 as the bacterial marker in the microbial leakage test. These results were supplemented with scanning electron microscopy (SEM).
The microbial leakage test indicated good sealing abilities for Resilon and Guttaflow, with the latter resisting microbial leakage for a longer period. AH plus with gutta-percha showed poor sealing ability. Results of the scanning electron microscopy correlated with the microbial leakage test. This study indicates that newer obturation systems like Guttaflow and Resilon cones with Epiphany provide better seal against microbial leakage than the standard obturation material, gutta-percha used with AH plus sealer.
本体外研究旨在评估和比较一种新型根管充填系统——Guttaflow与树脂基Resilon牙胶尖及Epiphany封闭剂的微生物渗漏情况，并将牙胶尖与AH plus封闭剂作为标准对照。
在微生物渗漏试验中，使用粪肠球菌ATCC 29212作为细菌标记物来测试微生物渗漏情况。这些结果通过扫描电子显微镜（SEM）进行补充。
微生物渗漏试验表明，Resilon和Guttaflow具有良好的封闭能力，后者抵抗微生物渗漏的时间更长。牙胶尖与AH plus封闭剂的封闭能力较差。扫描电子显微镜的结果与微生物渗漏试验结果相关。本研究表明，与标准的根管充填材料牙胶尖与AH plus封闭剂相比，新型的根管充填系统如Guttaflow和带有Epiphany的Resilon牙胶尖能提供更好的防止微生物渗漏的密封效果。
