Persistent infection in root-filled tooth: an SEM morphological analysis after apical microsurgery

Resumo

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.