Nobre, Miguel de AraújoSalvado, FranciscoNogueira, PauloRocha, EvangelistaIlg, PeterMaló, Paulo2025-07-142025-07-142019-09de Araújo Nobre, M., Salvado, F., Nogueira, P., Rocha, E., Ilg, P., & Maló, P. (2019). A Prognostic Model for the Outcome of Nobel Biocare Dental Implants with Peri-Implant Disease after One Year. Journal of Clinical Medicine, 8(9), 1352. https://doi.org/10.3390/jcm80913522077-0383http://hdl.handle.net/10400.26/58060Background: This investigation, based on a 1-year retrospective cohort study, aimed to estimate and validate a prognostic model for ailing and failing implants due to peri-implant disease. Methods: A total of 240 patients (male: 97; female: 143; average age of 57.3 years) with at least one ailing or failing implant were included: 120 patients for model derivation and 120 patients for model validation. The primary outcome measure was the implant status: success, defined as the arrest of the disease, or failure defined as implant extraction, prevalence or re-incidence of peri-implant disease). Potential prognostic risk indicators were collected at the baseline evaluation. The relative risk (RR) was estimated for the predictors through logistic regression and the c-statistic (95% confidence interval) was calculated for both derivation and validation sets. The significance level was set at 5%. Results: The risk model retrieved the prognostic factors age (RR = 1.04), history of Periodontitis (RR = 3.13), severe peri-implant disease status (RR = 3.26), implant length (RR = 3.52), early disease development (RR = 3.99), with good discrimination in both the derivation set (0.763 [0.679; 0.847]) and validation set (0.709 [0.616; 0.803]). Conclusions: A prognostic risk model for estimating the outcome of implants with peri-implant disease is available, with a good performance considering the c-statistic evaluation.engDental implantsPeri-implant diseasePeri-implantitisRiskEpidemiologyPrognosiscontribution to journal10.3390/jcm8091352