ProPex根尖定位仪在C形根管系统准确性的研究  

Evaluation of accuracy of ProPex electronic apex locator in measuring C-shaped root canal working length

作　　者：张梅[1,2] 徐学良[1,2] 刘溦[1,2] 曾雄群[1,2] 

机构地区：[1]广东省口腔医院 [2]南方医科大学附属口腔医院牙体牙髓病科,广州510280

出　　处：《口腔医学》2010年第11期644-645,660,共3页Stomatology

基　　金：广东省科技厅社会发展领域科技计划项目(73073)

摘　　要：目的对ProPex根尖定位仪测量C形根管工作长度的准确性进行评价。方法对24颗即将拔除的、术前X线片显示牙根部呈锥形或方形融合、开髓后证实为C型根管的下颌第二磨牙局麻下开髓、拔髓、冲洗,用ProPex根尖定位仪测量78个根管的工作长度(WL);完整拔除牙齿后测量根管的实际长度(AL),比较WL与AL的长度差异。结果以距根尖孔以内0.5mm为误差标准,ProPex根尖定位仪准确率为85.90%;以距根尖孔以内1.0mm为标准,准确率为91.03%;以距根尖孔以内1.5mm为标准,准确率为94.87%。结论 Propex根尖定位仪在C形根管工作长度确定方面的准确性较高,具有简便、快速、准确、安全、避免多次X线照射等优点,能大大缩短临床椅旁时间,提高根管治疗的效率。Objective To observe the accuracy of ProPex electronic apex locator in measuring C-shaped root canal working length.Methods 78 C-shaped root canal working lengths（WL） of 24 mandibular second molars were measured by ProPex electronic apex locator in vivo.After extraction of the teeth,actual canal lengths（AL） were determined.The distance between AL and ML was recorded.Results The accuracy of ProPex was 85.90% within 0.5 mm short of the AL,91.03% within 1.0 mm short of the AL and 94.87% within 1.5 mm short of the AL.Conclusions The results of this study indicate that ProPex is reliable in measuring C-shaped root canal working lengths.

关 键 词：PROPEX C形根管 根管工作长度 

分 类 号：R781.05[医药卫生—口腔医学]