Yilmaz Zeliha, Deniz Derya, Ozcelik Bahar, Sahin Cem, Cimilli Hale, Cehreli Zafer C, Kartal Nevin
Department of Endodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2009 Dec;108(6):e51-5. doi: 10.1016/j.tripleo.2009.07.057.
The objective of this study was to investigate the sealing properties of 2 warm vertical compaction techniques (BeeFill 2in1, System B/Obtura II) in comparison with single-cone and cold laterally compacted gutta-percha.
The root canals of single-rooted human teeth were prepared by using Mtwo rotary files and divided into 4 groups (n = 10/group) with respect to the filling technique tested: Group 1, cold laterally compacted gutta-percha + AH-26; Group 2, single-cone tapered Mtwo gutta-percha + AH-26; Group 3, System B/ObturaII + AH-26; Group 4, BeeFill 2in1 + 2seal. The leakage of specimens was measured using a fluid-filtration method after 1 and 2 weeks. The data were analyzed statistically with 2-way repeated measures ANOVA (P = .05).
After 1 week, the System B/Obtura II group showed the greatest amount of leakage(P < .05) compared with the other test groups that had similar levels of fluid conductance(P < .05). By the end of the second week, the BeeFill group yielded the greatest amount of leakage (P < .05). Compared with their 1-week values, the fluid conductance of all test groups decreased significantly (P < .05).
The apical sealing efficiency of System B/Obtura II and BeeFill were inferior to the other obturation techniques after 2-week fluid conductance testing in vitro.
本研究的目的是调查两种热垂直加压技术（BeeFill 2in1、System B/Obtura II）与单锥和冷侧向加压牙胶相比的封闭性能。
使用Mtwo旋转锉预备单根人牙的根管，并根据测试的充填技术分为4组（每组n = 10）：第1组，冷侧向加压牙胶+AH-26；第2组，单锥度Mtwo牙胶+AH-26；第3组，System B/ObturaII+AH-26；第4组，BeeFill 2in1+2seal。1周和2周后使用流体过滤法测量标本的渗漏情况。数据采用双向重复测量方差分析进行统计学分析（P = .05）。
1周后，与其他具有相似流体传导水平的测试组相比，System B/Obtura II组显示出最大的渗漏量（P < .05）。到第二周结束时，BeeFill组产生了最大的渗漏量（P < .05）。与它们1周时的值相比，所有测试组的流体传导率均显著降低（P < .05）。
在体外进行2周流体传导测试后，System B/Obtura II和BeeFill的根尖封闭效率低于其他充填技术。
