Aplicação da terapia fotodinâmica no tratamento endodôntico: Revisão de literatura

Abstract

Photodynamic therapy (PDT) acts to eliminate persistent microorganisms present in the root canal system, using the photosensitizing agent, light with specific wavelength and oxygen. This paper aims to conduct a literature review involving the use of photodynamic therapy (PDT) as an auxiliary resource in endodontic treatment. The research was carried out through a search in referenced databases, such as: LILACS, Virtual Health Library (VHL), PubMed and Scielo, selecting articles published from 2000 to 2020. Photodynamic therapy is indicated in cases of teeth with pulp necrosis, or in cases where endodontic reintervention is necessary. The indication is justified by the fact that photodynamic therapy reduces contamination, assisting biomechanical preparation in disinfecting the root canal system. Photodynamic therapy has some benefits, such as: it does not generate thermal effects, it does not generate sensitization or death of cells from healthy tissues adjacent to the root canal system. The persistence of microorganisms during endodontic treatment together with the incorrect use of intracanal medication is one of the main causes that lead to failure of endodontic treatment. Thus, with scientific advances it has become possible to employ new techniques, such as light that serves as a therapeutic agent for the treatment of root canal.