不同根管环境对Root ZX 和ProPex 准确性的影响研究

doi:10.3969/j.issn.1673-5749.2010.01.007

摘要/Abstract

摘要： 目的评价不同根管环境时，Root ZX 和ProPex 2 种根管长度测量仪的测量准确性。方法选取新鲜拔除的30 颗下颌单根管前磨牙，测量根管实际长度（L）后，在4 种测量环境（3%H2O2 溶液、0.9%NaCl 溶液、2.5%NaClO 溶液、根管干燥状态）下，用根管长度测量仪Root ZX 和ProPex 测量根管长度，得到工作长度LR（使用Root ZX 测量值）和LP（使用ProPex 测量值），再将上述样本沿牙根纵轴方向，用金刚砂车针磨出剖面，测量根尖剖面最狭窄点至解剖根尖孔的距离（D），计算L 与D 的差值得到根管实际工作长度。结果使用不同冲洗液（3%H2O2 溶液、0.9%NaCl 溶液、2.5%NaClO 溶液）冲洗根管及根管干燥状态时，Root ZX 和ProPex 测定的工作长度与根管实际工作长度的差异无统计学意义（P>0.05）；相同根管环境时，Root ZX 和ProPex 测量偏差有统计学意义（P<0.05），但在±0.5 mm 范围内，Root ZX 和ProPex 的测量准确率的差异无统计学意义（P>0.05）。结论 Root ZX 和ProPex 测量准确性不受根管环境影响，与根管干燥和湿润无关，且两者的测量准确性无明显差异。

关键词: Root ZX, ProPex, 根管工作长度, 根管冲洗液

Abstract: Objective To study the influence of different endodontic situations on the measurement accuracy of Root ZX and ProPex. Methods 30 extracted teeth were selected, after measurement of the actual working length （L）, the working length of root canal were measured using Root ZX（LR） and ProPex（LP） in 3% H2O2 solution, 0.9% NaCl solution, 2.5% NaClO solution or dry root canal, which was compared with the actual working length of root canal. The actual working length of root canal was obtained by the micro-observation of root apex（D） and means of software calculation. Results In four different environments, there was no statistically significant difference between the measuring length using Root ZX or ProPex and the real length of root canal（P>0.05）. But the measuring deviation between Root ZX and ProPex had statistical significance（P＜0.05） when the same endodontic situation was used. If the measurement error was ±0.5 mm, the differences between the measurement accurate ratio of Root ZX and ProPex had no statistical significance（P>0.05）. Conclusion The accuracy of measurement of Root ZX or ProPex was not influenced by root canal media and had no relation to the dry or moist root canal. There was no statistically significant difference between the accuracy of the two electronic apex locators.

Key words: Root ZX, ProPex, working length of root canal, endodontic irrigation

中图分类号:

黄林, 牛卫东. 不同根管环境对Root ZX 和ProPex 准确性的影响研究[J]. 国际口腔医学杂志, 2010, 37(01): 23-25,29.

HUANG Lin, NIU Wei-dong.. Effect research of different root canal environments on the accuracy of Root ZX a[J]. Inter J Stomatol, 2010, 37(01): 23-25,29.

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