Frequency of Peri-implant Diseases and Prosthetic Conditions in Subjects Rehabilitated with Osseointegrated Implants.
Dental implants, peri-implantitis, prevalence.
Objective: To determine the frequencies of periodontal and peri-implant conditions as well evaluate the prosthetic conditions in subjects who were underwent to the rehabilitation treatment with dental implants at Department of Dentistry in Federal University of Rio Grande do Norte in the last 18 years, after an interval of seven years that they were attended. Methodology: A longitudinal study was performed in which 155 patients underwent periodontal and peri-implant clinical exams in 2012 (baseline). Seven years later, 35 patients returned to a new evaluation of the following parameters: plaque and gingival b indexes, periodontal and peri-implant bleeding, periodontal probing on pocket depth and peri-implant probing, gingival retraction, clinical attachment level, keratinized mucosa, implant mobility, suppuration and radiographic examination was performed to observe the presence of supracrestal exposure of the implant threads and misfits between implant/abutment and abutment/prosthesis. Regarding the prosthetic conditions, the type of prosthesis, fixation, design and defects that appeared during the evaluation interval were evaluated. The association between the independent variables and the dependent variable was evaluated using the Pearson's Chi-square test and the Fisher's exact test, at a significance level of 95%. Results: The frequency of periodontal diseases was 34.3% for gingivitis and 51.4% for periodontitis. Peri-implant mucositis was the most frequent diagnosis (54.3%) and peri-implantitis presented a frequency of 28.6%. The most frequent prosthetic defects were porcelain fracture (11.4%), screw loosening (8.6%), loss of retention (8.6%) and loss of screw coverage resin (8.6%). Conclusion: Periodontal and peri-implant maintenance therapies are extremely important for the patient, as long as the time interval between clinical appointments is reduced, in order to reduce the chance of periodontal / peri-implant disease or prosthetic failure and improve the condition of the patient.