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目的:了解塑化治疗根管再治疗时影响根管疏通的因素。方法:收集有塑化治疗史而需要重新根管治疗的牙齿68例,记录临床症状和牙位,拍初始X线片记录根尖情况。运用手术显微镜和超声治疗仪进行根管再治疗,记录根管的疏通情况。结果:68例病例189个根管中131个根管完全疏通,48例病例成功进行再治疗,前磨牙15例,磨牙29例。结论:在显微镜和超声治疗仪的帮助下,患牙根尖病变情况,2次治疗间隔时间以及牙位均对再治疗牙的根管疏通有显著影响,对治疗成功率有显著影响。
OBJECTIVE: To understand the factors that influence the root canal dredge during the re-treatment of plastic root canal therapy. Methods: Sixty-eight cases with history of plasticization treatment and need of re-root canal treatment were collected. The clinical symptoms and dental position were recorded and the initial radiographs were recorded. The use of surgical microscope and ultrasound treatment of root canal re-treatment, record the root canal dredge situation. Results: 131 root canal of 189 root canals in 68 cases were completely unblocked, and 48 cases were successfully re-treated. There were 15 cases of premolar and 29 cases of molars. CONCLUSIONS: With the help of the microscope and the ultrasonic therapy instrument, the lesions of apical apical lesions, the interval of two treatments and the position of the teeth have a significant effect on rehabilitating the root canal of rehabilitated teeth and have a significant effect on the success rate of treatment.