根管冲洗液及血液对根尖定位仪测量准确性的影响  

Effect of root canal irrigation fluid and the blood on the accuracy of electronic apex locators

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

机构地区：[1]深圳市龙岗中心医院耳鼻咽喉科医院口腔科,广东深圳518172

出　　处：《广东牙病防治》2014年第10期529-531,共3页Journal of Dental Prevention and Treatment

摘　　要：目的研究4种常用根管冲洗液及血液对根尖定位仪测量准确性的影响。方法收集40颗根尖孔发育完成的单根管离体牙构建体外实验模型。测量根管工作长度实际值;应用Raypex-5根尖定位仪分别测量在根管内灌注4种冲洗液(生理盐水、体积分数3%过氧化氢溶液、质量分数5.25%次氯酸钠溶液、体积分数17%乙二胺四乙酸溶液)和血液介质环境下的根管工作长度测量值。对测量数据进行单因素方差分析。结果 40个根管的工作长度实际值和在生理盐水、体积分数3%过氧化氢溶液、质量分数5.25%次氯酸钠溶液、体积分数17%乙二胺四乙酸溶液及血液5种介质中根尖定位仪根管工作长度测量值分别为(17.61±2.25)mm、(18.18±1.33)mm、(17.89±1.30)mm、(17.77±1.56)mm、(16.58±1.38)mm和(16.44±1.61)mm,差异无统计学意义(F=1.963,P=0.091)。结论 Raypex-5测量根管工作长度的准确性不受根管内残留冲洗液和血液的影响。Objective To study the influence of four different solutions（ 0. 9% NaCl,3% H2O2,5.25% NaOCl,17% EDTA） and blood onthe accuracy of Raypex-5 apex locator. Methods Forty extracted teeth with single straight canals and completed foramina were selected to record the ideal actual measurements and then were taken to build a model to mimic the situation in vivo. Forty single canal teeth filled with 0. 9% NaCl,3% H2O2,5.25% NaOCl,17% EDTA the four different solutions and blood were used to record the experimental measurements with the Raypex-5 apex locator.The Single factor variance analysis was applied to analyze the result. Results The experimental measurements of the forty single canal teeth filled with 0. 9% NaCl,3% H2O2,5.25% NaOCl,17% EDTA the four different solutions and blood were（ 17. 61 ± 2. 25） mm,（ 18. 18 ± 1. 33） mm,（ 17. 89 ± 1. 30） mm,（ 17. 77 ± 1. 56） mm,（ 16. 58 ±1. 38） mm and（ 16. 44 ± 1. 61） mm and there was no statistical significance between the experimental measurements with different solutions and the ideal actual measurements（ F = 1. 963,P = 0. 091）. Conclusion The accuracy about the canal length measuring of Raypex-5 is not affected by the contents of the root canal.

关 键 词：根管冲洗液 根管疗法 牙科器械 电子根尖定位仪 根管 液体 

分 类 号：R781.05[医药卫生—口腔医学]