Ozone application as adjunctive therapy in the treatment of extensive periapical lesions: case report with a 3-year follow-up

Abstract

Introduction: Ozone (O3) is a natural gas and a potent and selective oxidizer and when it comes into contact with tissues it quickly dissociates, releasing reactive forms of oxygen that can oxidize cells, having possible and favorable antimicrobial efficacy and can be used as a source Complement of disinfection in the chemomechanical preparation of root canals. Objective: to report the use of ozone therapy as a complementary therapy in the treatment of extensive periapical lesions. Case report: Female patient, 34 years old, non-smoker and without systemic alterations, sought the dental clinic of a college in northern Brazil with the main complaint of dental pain (toothache) and presenting edema and swelling in the antero-inferior region. The intraoral clinical examination showed the presence of a point of drainage of purulent exudate via the periapical route, chromatic change in elements 31 and 41, grade 1 mobility, absence of loss of the clinical attachment level, drainage of purulent exudate and bleeding via the gingival sulcus, as well. as the absence of biofilm or supra/subgingival calculi and the tomographic exam showed the presence of extensive periapical lesion in teeth 32, 31, 41 and 42. The endodontic treatment was performed by the crown-down technique using ozone therapy associated with surgery paraendodontic with bone graft with xenogenic material. Conclusion: After forty days, it was identified absence of mobility of the involved teeth and disappearance of edema and drainage point, in the radiographic examination there was a significant reduction of the lesion, demonstrating that the association between ozone therapy and standard mechanical endodontic treatment resulted in satisfactory clinical success.