CLINICAL AND RADIOLOGICAL STUDY ON PERI-IMPLANT STATUS IN POSTERIOR IMPLANT-SUPPORTED PARTIAL FIXED DENTURES
Abstract
Aim of this study was to evaluate the clinical and radiological status of the peri-implant tissues in patients treated with posterior implant-supported partial fixed dentures. Materials and methods: The retrospective research was conducted on a cohort of 48 patients (mean age 63.04 ± 10.723 years). The study group included patients with posterior edentulism treated by implant-supported metal-ceramic fixed prosthetic restorations. Socio-demographic data (gender, age group) and anamnestic data were collected on: smoking status; periodontal grade; compliance to the supportive periodontal/peri-implant therapy; OHI index. Clinical and radiological parameters were assessed for 166 implants to establish the status of the peri-implant tissues and prevalence of peri-implantitis. Results: 45.8% of patients and 19,9% of implants were diagnosed with peri-implantitis. Significant statistical differences were found between implants without peri-implantitis and implants with peri-implantitis for gender (p= 0.022*), age group (p= 0.018*), smoking status (p= 0.007**), OHI index (p < 0.001**), periodontitis stage (p < 0.001**), and compliance to periodontal/peri-implant support therapy (p<0.001*). Conclusions: Although peri-implantitis affects almost half of the patients (45.8%), the proportion of individual implants affected is lower (19.9%). Incidence of peri-implantitis was significantly lower to patients with good oral hygiene, non-smokers, low grade periodontal disease, or patients compliant with periodontal/peri-implant support therapy.
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