Antimicrobial photodynamic therapy associated with long term success in endodontic treatment with separated instruments: a case report
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Universidade Federal de Minas Gerais
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Artigo de periódico
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This paper describes a case with a 5- year follow-up of Antimicrobial Photodynamic Therapy (aPDT) associated
with long-term success in endodontic treatment in a tooth with separated instruments. The patient presented
with a tooth exhibiting a periapical lesion, slight swelling, and severe pain. A radiograph revealed the presence
of two separated files in the middle and apical thirds of the mesial root on a lower first molar. Attempts at
bypassing were not successful. In the mesial root, instrumentation was limited to the coronal ends of the se-
parated instruments. The apical patency could not be achieved due to the blockage of the separated files. aPDT
was performed in two visits, at a 660-nm wavelength and 100 mW of power, for 90 s to a total energy of 9.0
Joules. Methylene blue solution was used as photosensitizer at concentration of 0005%. A 300-μm light diffusor
was coupled to the diode laser and was inserted into the root canal 2 mm short of WL, where it was set to allow
better diffusion of light. Each root canal was sealed with gutta-percha by warm vertical compaction and Pulp
Canal Sealer™. After 5 years of follow-up, clear evidence of remineralization of the radiolucency and bone
healing was observed. This case report suggests that the addition of aPDT to conventional endodontic treatment
improved microbial disinfection leading to a successful long-term outcome
Abstract
Assunto
Infection, Endodontics, Methylene blue
Palavras-chave
photodynamic therapy, Endodontic infection, Separated instrument, Treatment outcome
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https://www.sciencedirect.com/science/article/pii/S1572100018303648?via%3Dihub