ENDODONTIC RETREATMENT IN TEETH WITH PERIAPICAL LESIONS: A CLINICAL AND HISTOLOGICAL ANALYSIS

Abstract

Endodontic retreatment represents an essential therapeutic alternative for maintaining previously treated teeth that have presented clinical or radiographic failure, especially in the presence of periapical lesions. This study, developed through a bibliographic review, aimed to analyze the clinical, microbiological, histological, and radiographic aspects related to endodontic retreatment, emphasizing the factors that influence therapeutic success and periapical tissue repair. National and international databases such as PubMed, SciELO, and LILACS were consulted using specific descriptors on endodontic retreatment and periapical lesions. The literature shows that the persistence of resistant microorganisms, such as Enterococcus faecalis and Candida albicans, is the main cause of therapeutic failure, requiring strict disinfection protocols and advanced instrumentation and obturation techniques. The use of operating microscopy, ultrasonic irrigation, and bioceramic materials has shown promising results, promoting healing and preservation of the dental structure. It is concluded that endodontic retreatment, when conducted based on biological principles and updated techniques, presents high success rates and constitutes a conservative and effective approach for managing periapical lesions, contributing to the functional and aesthetic preservation of affected teeth.