根管干湿状态对电测根管长度准确性的影响  

The Influence of Root Canal Humidness on the Accuracy of ROOT ZX Apex Locator

作　　者：雷月娟[1] 何克新[1] 罗莉[1] 曾启新[1] 

机构地区：[1]广西医科大学附属口腔医院,广西南宁530021

出　　处：《广东牙病防治》2008年第7期294-296,共3页Journal of Dental Prevention and Treatment

摘　　要：目的评价根管干湿状态对ROOT ZX测定根管工作长度的准确性的影响。方法21颗根尖发育完成的单根管牙,用ROOT ZX根管长度电测仪分别测量根管在干、湿状态时的根管工作长度,与拔牙后所测实际值比较,并进行统计学分析。结果根管干、湿状态下ROOT ZX的电测值与实际值间的差异均无统计学意义(P>0.05)。结论对于根尖孔已发育完成的患牙,根管干、湿状态对ROOT ZX测量根管工作长度的准确性无影响。Objective To evaluate the influence of root canal humidness on the accuracy of determining root canal length by ROOT ZX apex locator in vivo. Methods 30 teeth （single canal） with mature root apices were used in this study. All canals were measured by using ROOT ZX apex locator under different root canal humidness in vivo. Then the teeth were extracted and measured. The difference between electronic measuring length （EML） and the actual length （AL） was compared. Informed consent was obtained from each patient in advance. Results There was no significant difference between EML and AL （P〉0.05）. Under dry and wet root canal condition, the ROOT ZX apex locator was 76.19%, 100% and 90.48%, 100% accurate to within ±0.5 mm,±1.0 mm respectively. Chi-square test showed dry/wet canal had no significant influence on the measurement （P〉0.05）. Conclusion The accuracy of ROOT ZX apex locator in locating the minor foramen is not adversely affected by root canal humidness.

关 键 词：根管长度电测仪 根管工作长度 根管治疗 

分 类 号：R781.05[医药卫生—口腔医学]