根管预备状况对Raypex~5测量准确性的实验研究  

In Vitro Study of Root Canal Preparation Conditions on the Accuracy of Raypex~5

作　　者：杨杭玲[1] 葛久禹[1] 姚江江[1] 

机构地区：[1]南京大学医学院附属口腔医院口腔内科,江苏南京210008

出　　处：《口腔医学研究》2010年第6期873-875,共3页Journal of Oral Science Research

基　　金：南京市医学发展专项基金(编号:zkm05053)

摘　　要：目的:研究根管预备状况对Raypex5测量根管工作长度准确性的影响。方法:收集根尖孔发育完成的单根离体牙32个,使用Raypex5分别测量预备前,常规预备,过度预备的根管工作长度。镜下测量实际根管工作长度。将3种电测根管工作长度与实际根管工作长度比较,差值在(0±0.5)mm范围内定为准确。结果:Raypex5测量离体牙预备前,常规预备,过度预备的准确率分别为96.87%、93.75%、87.50%。三者间差异无显著性。电测各组间俩俩比较差异无显著性。结论:在本研究条件下,根管预备对Raypex5测量实验牙根管工作长度准确性无明显影响。Objective：To investigate the effect of root canal preparation conditions on the accuracy of Raypex5. Methods：32 single-canal extracted teeth were collected,root tips of which had growthed completely. The actual canal working length and canal length were measured. We compared the canal working length and the position of apical foramen before root canal preparation,after routine root canal preparation and after root canal excess preparation on Raypex5. The difference in the range of 0～-0.5mm was considered coincide. Results：The accuracy rates were 96.87%,93.75% and 87.50% respectively before root canal preparation,after routine root canal preparation and after root canal excess preparation. They had no significantly difference. Electrical Measurement among three groups had no difference. Conclusion：Root canal preparation does not have significantly effect on the accuracy of Raypex5 in this experimental environment.

关 键 词：电子根尖定位仪 准确性 根管预备 

分 类 号：R781.05[医药卫生—口腔医学]