Resumo

PELEGRINE, Rina Andréa et al. Persistent infection in root-filled tooth: an SEM morphological analysis after apical microsurgery. RSBO (Online) [online]. 2012, vol.9, n.4, pp. 463-467. ISSN 1984-5685.

Introduction and Objective: Endodontic failure can be associated to well-conducted treatments due to microbial factors characterized by intra or extraradicular infections not eliminated during endodontic treatment. Case report: This report describes a case of persistent apical periodontitis of an asymptomatic maxillary lateral incisor endodontically retreated and subsequently subject to apical surgery. Conclusion: After SEM morphological analysis of the apical fragment, areas of cementum-dentin resorption that were probably responsible for the perpetuation of the disease process were observed.

Palavras-chave : apical periodontitis; apical surgery; retreatment..