Ricucci D, Langeland K
Department of Restorative Dentistry and Endodontology, School of Dental Medicine, University of Connecticut Health Centre, Farmington, USA.
Int Endod J. 1997 Nov;30(6):418-21. doi: 10.1046/j.1365-2591.1997.00097.x.
This case demonstrates failure of root canal treatment of a maxillary central incisor following incomplete mechanical removal of a Ca(OH)2 intracanal dressing and subsequent resorption of the material from the apical portion of the root canal. Retreatment some 4 years later involved the removal of the contents of the root canal and permanent obturation by lateral condensation of cold gutta-percha with a sealer. Follow-up showed complete periradicular bone healing with a lamina dura evident. An explanation of the processes involved is offered, based upon histopathological and microbiological evidence in the literature.
该病例显示，上颌中切牙根管治疗失败，原因是根管内氢氧化钙敷料机械去除不完全，随后根管根尖部分的材料发生吸收。约4年后的再治疗包括清除根管内容物，并使用封闭剂通过冷牙胶侧向加压进行永久充填。随访显示根尖周骨完全愈合，硬板清晰可见。基于文献中的组织病理学和微生物学证据，对所涉及的过程进行了解释。
