5种液体对ProPex根尖定位仪准确性影响的体外实验研究  

In vitro study on effect of five different solutions on the accuracy of Pro Pex electronic apex locator

作　　者：王晓彦[1] 耿发云[1] 李红文[1] 傅云婷[1] 杜瑞钿[1] 

机构地区：[1]广东省深圳市龙岗中心医院(耳鼻咽喉科分院)口腔科,广东深圳518172

出　　处：《口腔医学》2015年第8期639-641,共3页Stomatology

基　　金：深圳市科技计划项目(201203312);深圳市龙岗区科技计划项目(ys2012132)

摘　　要：目的研究5.25%次氯酸钠液、生理盐水、17%EDTA、3%过氧化氢液4种不同冲洗液以及血液对Pro Pex根尖定位仪测量准确性的影响。方法选择根尖孔发育完成的单根管离体牙45颗,记录理论实际值后在生理盐水琼脂凝胶上构建体外评价模型,根管内分别灌注5.25%次氯酸钠液、生理盐水、17%EDTA、3%过氧化氢液和血液,使用Propex记录测量值。结果各组根管内容物对Propex测量值的影响无统计学意义(F=1.959,P=0.090,P>0.05)。结论 Pro Pex测量牙齿操作长度的准确性不受根管内容物的影响。Objective To study the effect of four different solutions： 5. 25% Na OCl,0. 9% Na Cl,17% EDTA,3% H2O2 and the blood on the accuracy of Pro Pex apex locator. Methods Forty-five extracted teeth with single straight canals and completed foramina were selected to record the ideal actual measurements and then were taken on a normal saline agar model to mimic the situation in vivo.Forty-five single canals teeth filled with 5. 25% Na OCl,0. 9% Na Cl,17% EDTA,3% H2O2 and blood were used to record the experimental measurements with the Pro Pex apex locator. Results The accuracy of Pro Pex apex locator was not affected by different canal contents and the measurements of each group were not statistically different（ F = 1. 959,P = 0. 090,P〈0. 05）. Conclusions Canal length measuring accuracy of Pro Pex is not affected by the contents of the root canal.

关 键 词：离体牙 根尖定位仪 根管 液体 

分 类 号：R781.05[医药卫生—口腔医学]