Morand M A
Section en Endodontie, Université Laval, Québec, QC.
J Can Dent Assoc. 1990 Jun;56(6):491-6.
In this article, a statistical analysis describes 198 cases of post-endodontic failures referred from private practitioners for surgical retreatments. Biopsies of these lesions showed that 68.18 per cent of them were identified as apical granulomas, 3.5 per cent as cysts, 16.16 per cent as epitheliated granulomas and 12.12 per cent as "other" cases. The two main groups of causes associated with these failures are: technical errors (55.05 per cent of the cases) and procedural mistakes (17.68 per cent).
在本文中，一项统计分析描述了198例由私人执业医生转诊进行手术再治疗的根管治疗后失败病例。对这些病变的活检显示，其中68.18%被鉴定为根尖肉芽肿，3.5%为囊肿，16.16%为上皮样肉芽肿，12.12%为“其他”病例。与这些失败相关的两个主要原因组是：技术错误（占病例的55.05%）和操作失误（占17.68%）。
