US Army Dental Activity, Department of Endodontics, Fort Gordon, Augusta, Georgia 30905, USA.
J Endod. 2012 Sep;38(9):1265-8. doi: 10.1016/j.joen.2012.05.009. Epub 2012 Jul 20.
This in vitro study compared debridement efficacies of a sonic irrigation technique (Vibringe; Cavex Holland BV, Haarlem, The Netherlands) with side-vented needle irrigation (SNI) in the mesiobuccal root of maxillary first molars.
Twenty roots with narrow isthmuses (≤ 1/4 canal diameter) were selected using micro-computed tomography scanning. Collagen solution was injected into canals/isthmuses and reconstituted with NH(4)OH to simulate canal debris. Each root was sealed apically and embedded in polyvinyl siloxane simulating a closed-canal system. Canals were instrumented to size 40/.04 taper 1 mm short of the anatomic apex. The final irrigation was performed with the Vibringe or SNI. Roots were demineralized, sectioned at 6 levels (1.2-3.2 mm) from the anatomic apex, and stained using Masson trichrome stain. The areas occupied by canals and isthmus and the debris-containing areas were statistically analyzed with repeated-measures analyses using "irrigation technique" as the between factor and "canal level" as the within factor (α = 0.05).
Canals had significantly more debris at 1.2 and 1.6 mm (P < .001), but there was no overall difference between the 2 techniques (P = .561). Significant differences were found between the Vibringe and SNI at 2.4, 2.8, and 3.2 mm (P < .05). There was no significant difference in the remaining debris in the isthmus for SNI at all (P > .05). Considerably more debris remained at 1.2 and 2.0 mm for the Vibringe (P < .05). A significant difference was observed between the canal and the isthmus (P < .001).
There is no difference between the Vibringe and SNI in their overall debridement efficacy in apical one third of the mesiobuccal root of maxillary first molars.
本体外研究比较了声波冲洗技术（Vibringe；Cavex Holland BV，荷兰哈勒姆）与侧孔针冲洗（SNI）在上颌第一磨牙近中颊根根管内峡部（≤1/4 根管直径）的清创效果。
使用微计算机断层扫描选择 20 个峡部较窄（≤1/4 根管直径）的根。将胶原溶液注入根管/峡部并用 NH（4）OH 复溶以模拟根管内碎屑。每个根的根尖都被密封并用聚硅氧烷包埋模拟一个封闭的根管系统。将根管预备至 40/.04 锥度 1 毫米，止于解剖根尖。最后用 Vibringe 或 SNI 冲洗。根被脱矿，从解剖根尖沿 6 个水平（1.2-3.2 毫米）进行切片，用 Masson 三色染色法染色。使用重复测量分析，以“冲洗技术”为组间因素，“根管水平”为组内因素，对根管和峡部占据的面积以及含有碎屑的区域进行统计学分析（α=0.05）。
在 1.2 和 1.6 毫米处，根管内有明显更多的碎屑（P <.001），但两种技术之间没有总体差异（P =.561）。在 2.4、2.8 和 3.2 毫米处，Vibringe 和 SNI 之间存在显著差异（P <.05）。SNI 在峡部内的剩余碎屑在所有水平处均无显著差异（P >.05）。在 Vibringe 中，在 1.2 和 2.0 毫米处仍有明显更多的碎屑（P <.05）。在根管和峡部之间观察到显著差异（P <.001）。
在对上颌第一磨牙近中颊根根尖三分之一区域的总体清创效果方面，Vibringe 和 SNI 之间没有差异。
