Immediate Implant Placement in Infected Sockets: Curettage Protocol Plus Disinfection with Hydrogen Peroxide and Rifamycin. Retrospective Analysis at 6 years of Follow-up

Abstract

Context: Immediate implant placement in a fresh socket after extraction is an increasingly popular and established treatment option. However, active infection at the extraction site can adversely affect the outcome of this procedure. Aims: This study was designed to evaluate the clinical results of immediate dental implant placement in infected extraction sockets. Settings and Design: using a standardized protocol, which included the use of 3% hydrogen peroxide plus rifamycin 500 mg as irrigation for decontamination of the infected socket before implant insertion with submerged healing. Patients and methods: The sample consisted of 227 implants placed in 158 patients, the data were obtained through a retrospective review of the clinical registry selected of patients who received implants according to the protocol described. Statistical analysis used: A generalized binary response regression model was used. For all tests, the statistical significance value was set at p <0.05. Results: Of the 227 implants placed immediately in the infected sites using the described protocol with an average follow-up of 6 years of prosthetic loading, only 11 failed, resulting in a cumulative implant survival rate of 95.2%. Only the medical history / harmful habits factor (HM / HH) was significant (p = 0.002), in this group the success rate was 85.7%. However, in the group of healthy patients without harmful habits, the success rate rises to 98.8%. Conclusion: Immediate implant placement in infected sites using these protocols in healthy patients shows a survival rate similar to that published for implants placed in non-infected sites.