Title: Clinical analysis of factors associated with endodontic treatment failure
Abstract: AIM:To analyze the factors of endodontic treatment failure.METHODS:236 failed treated teeth were analyzed according to the initial treatment records, clinical examination, pretreatment radiographs, and root canal exploration during endodontic retreatment.RESULTS:83.7% of mummified teeth showed apical lesion. 57.1% of failed resinified teeth resulted from fracture,and incomplete resinifying was the next.For failure teeth with root canal therapy, 58.5% had apical lesion, 85.1% indicated under-filling, and most canals had poor taper and flow characteristics. 14.9% had complications such as ledge and transportation.Root canals were omitted in some premolars and maxillary first molars.CONCLUSION:Most mummified teeth had poor result. The main cause of failure of resinfying therapy involved teeth fracture and inadequate resinfying operation. The factors associated with root canal therapy failure involve poor seal of root canal system resulted from inadequate shaping, cleaning and obturation. Coronal leakage and missed canals also contribute to the root canal treatment failure.
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
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