避免牙根折裂误诊新方法的临床初探

The study of the new measuse of avoiding misdiagnosis of root fracture

目的:初步探讨避免牙根折裂误诊新方法的临床疗效。方法:对疑似有牙根折裂的患牙进行诊疗。开髓时对疑似根折牙根进行根管预备至20号,用TRRY根尖定位仪进行检测。如有牙根折裂者根尖定位仪探针会在进入根管口下2～3mm处即可提前报警显示,此时根管长度已超出根尖孔,而对于根管无折裂者可以在正常接近根尖孔处报警。同时,用数字化成像系统拍摄牙片,分析判断牙根是否存在根折。结果:45例诊断为牙髓、根尖周炎、牙周病的患者有62个牙根检测出有根折。32例患者诊断为牙根折裂者用此方法根测,有16例无根折而被误诊。结论:拍片并用TRRY根尖定位仪检测牙根是否存在折裂的方法是行之有效、快捷的,可避免牙根折裂的误诊,值得临床推广应用。

Objective To investigate the new measuse of avoiding misdiagnosis of root fracture and it＇s clinical efficacy. Methods To treat the paitients who were doubted to root fracture, root canals which were suspected to crack canal were prepared to the 20th. To test the working length with Tester TRRY. If the root was a fractured canal, the Tester TRRY would warn when the probe enter root canal orifice 2-3mm. And the Tester TRRY would not warn until the probe entering the root foramen in the canal without fracturing. Simultaneously,we can analyse whether the roots have root fracture through taking X-ray photos of oral digital imaging system. Results There were 45 patients and 62 canals which were diagnosed as pulpitis, or periapical periodontitis or periodontitis were tesed as root fracture with Tester TRRY. And 16 cases in 32 cases which were diagnosised as root fracture were not tested as root fracture. Conclusion The measure of using the Tester TRRY and taking X-ray photos to diagnosis the root fracture is a effective, shortcut measure. This measure can avoid the misdiagnosis of root fracture. It is worth popularization and application.