Retreatment of endodontic fillings.
Retreatment of endodontic fillings.
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牙髓填充物的再治疗。
DOI：
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
Bure Engstrom
中科院分区：
文献类型：
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作者：
G. Bergenholtz;U. Lekholm;R. Milthon;G. Heden;Björn Ödesjö;Bure Engstrom
在660个先前根充过的根中评估了根管再治疗对封闭质量和尖周愈合的影响。根据根尖周区是否存在病理改变，将牙根分为两组。由牙科学生进行的再治疗涉及彻底的根管系统化学机械清创术，旨在控制感染。经过2年的观察期，556根重新进行了临床和放射学检查。结果表明，技术缺陷的根管充填物，再处理后，可以显着提高封闭的有效性和距离根尖。也可以处理和填充大量可辨别的根尖至牙根填充的管腔。78%的病例在再治疗前出现根尖周病理性病变，或者完全愈合，或者显示出明显的过程缩小。仅因技术缺陷而进行的再治疗在94%的病例中获得成功。结论：当治疗有缺陷的根管充填物并发根尖周病变时，尽可能重新进行根管治疗是首选方法。如果观察后没有明显的愈合迹象，可以尝试根尖手术。
Effects of endodontic retreatment on quality of seal and periapical healing were assessed among 660 previously root-filled roots. The roots were divided into either of two groups according to presence or absence of pathologic alterations in the periapical area. The retreatments, which were carried out by dental students, involved a thorough chemomechanical debridement of the root-canal system aiming to control infection. Following a 2-year observation period 556 roots were reexamined clinically and radiographically. The results showed that root-fillings with technical shortcomings could, following retreatment, be markedly improved as regards effectiveness of seal and distance to the apex. A large number of lumina discernible apical to root-filling could also be treated and filled. Seventy-eight percent of the cases with pathologic lesion present periapically prior to retreatment either completely healed or displayed an obvious size-reduction of the process. Retreatments carried out because of technical inadequacies alone were successful in 94% of the cases. It was concluded that renewed endodontic treatment whenever possible is the method of choice when treating defective endodontic fillings complicated with pathologic processes periapically. Apical surgery may be attempted if no signs of healing are apparent following observation.