比较使用 EndoVac 或根管内针头冲洗对 NaOCl 的根尖挤出。
Comparison of apical extrusion of NaOCl using the EndoVac or needle irrigation of root canals.
机构信息
Catholic University of Korea, Seoul, Korea.
出版信息
J Endod. 2010 Feb;36(2):338-41. doi: 10.1016/j.joen.2009.10.003. Epub 2010 Jan 19.
INTRODUCTION
The purpose of this study is to compare extrusion of irrigants delivered with a 27-G needle or the EndoVac system (Discus Dental, Culver City, CA) during instrumentation and final irrigation of teeth.
METHODS
Matched paired single canal teeth were divided into four sample groups and controls. The experimental groups were needle irrigation International Standards Organization (ISO) size #40 (N40) and #60 (N60) and EndoVac ISO size #40 (E40) and #60 (E60). Teeth were secured and embedded in 0.2% agarose gel (ph = 7.3-7.4) containing 1 mL 0.1% m-cresol purple, which changes color at a pH of 9.0. Teeth received NaOCl and EDTA irrigation with the 27-G slot needle or the EndoVac system. The amount of irrigation was controlled for each sample. Standardized digital photographs were taken 20 minutes after the first irrigant was used. Photographs were analyzed by using Adobe Photoshop 7 (Adobe, San Jose, CA) to determine the amount of extrusion expressed as percent of total pixels.
RESULTS
Data from sample groups show the following: N40 with 50% extrusion (6/12), E40 with 8.33% extrusion (1/12), N60 with 58.33% (7/12), and E60 with 8.33% (1/12). The overall extrusion frequency, regardless of apical preparation size, was 54.17% (13/24) for needle and 8.33% (2/24) for EndoVac. Analysis of N40 and E40 revealed p < 0.03. Analysis of N60 and E60 revealed p < 0.01. Comparison of needle irrigation versus EndoVac showed a significant p value of 0.0007.
CONCLUSIONS
This study showed significantly less extrusion risk using the EndoVac system compared with needle irrigation.
简介
本研究的目的是比较在器械预备和最终冲洗时，27-G 针头或 EndoVac 系统（加利福尼亚州卡尔弗市 Discus Dental）输送冲洗液时对冲洗液的挤出情况。
方法
将匹配的成对单根管牙分为四组实验组和对照组。实验组分别为 27-G 针头的 ISO 规格 40 号（N40）和 60 号（N60）和 EndoVac 的 ISO 规格 40 号（E40）和 60 号（E60）。牙齿用 0.2%琼脂糖凝胶（pH 值为 7.3-7.4）固定并嵌入凝胶中，凝胶中含有 1mL0.1%间甲酚紫，该溶液在 pH 值为 9.0 时会变色。牙齿用 NaOCl 和 EDTA 冲洗液进行冲洗，使用 27-G 槽型针头或 EndoVac 系统。对每个样本的冲洗量进行了控制。第一次冲洗剂使用 20 分钟后，拍摄标准化的数字照片。使用 Adobe Photoshop 7（Adobe，圣何塞，加利福尼亚州）分析照片，以确定挤出量，用总像素的百分比表示。
结果
来自实验组的数据显示：N40 挤出率为 50%（6/12），E40 挤出率为 8.33%（1/12），N60 挤出率为 58.33%（7/12），E60 挤出率为 8.33%（1/12）。无论根尖预备大小如何，针头的总体挤出频率为 54.17%（13/24），EndoVac 的挤出频率为 8.33%（2/24）。N40 和 E40 的分析显示 p < 0.03。N60 和 E60 的分析显示 p < 0.01。与针头冲洗相比，针头冲洗和 EndoVac 的比较显示 p 值显著（p < 0.0007）。
结论
与针头冲洗相比，本研究表明使用 EndoVac 系统的挤出风险明显较低。
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