Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Programa de Pós-Graduação em Odontologia, Florianópolis, 2013.O objetivo do estudo foi avaliar a associação de fatores sistêmicos e características da reabilitação implantossuportada - implante, prótese e parâmetros clínicos - na perda óssea peri-implantar adicional = 2mm (POA). Foram selecionados para o estudo 297 pacientes, reabilitados com 1001 implantes por pelo menos 1 ano. Os efeitos de diversas variáveis potencialmente explicativas foram avaliados segundo condição sistêmica do paciente, e características do implante, prótese e parâmetros clínicos. A regressão logística não demonstrou associação de fatores sistêmicos na POA. Houve correlação estatística positiva para POA na carga mediata (pAbstract : The aim of the study was to retrospectively evaluate the association of systemic factors and implant-supported rehabilitation features - implant, prosthesis and clinical parameters - with additional peri-implant bone loss = 2mm (ABL). For this study, there were selected 297 patients rehabilitated with 1001 implants at least 1 year in function. The effects of several potentially explanatory variables were evaluated according patient?s systemic conditions and implant, prosthesis and clinical parameters? features. Logistic regression did not demonstrate any association of systemic factors in ABL. There was a positive statistical correlation for ABL in immediate loading (p<0,001), machined surface (p=0,007) and implants in function for more than 4 years (p<0,001) - implant level. Cemented prosthesis (p=0,008) and multiple prostheses (p<0,001) presented higher values for ABL. For clinical parameters analysis, higher ABL was observed in implants that presented adjacent biofilm (p<0,001), higher values of marginal recession (MR) (p<0,001) and clinical probing depth (PD) =5mm (p<0,001). No systemic factor influences ABL. Immediate loading and surface treatment favor the maintenance of peri-implant bone. Also, ABL is associated with cemented prosthesis; partial dentures; and implants in function for more than 4 years. Moreover, with the presence of adjacent biofilm and higher values of MR and PD =5mm. Hence, patients with such issues should be informed about the risk of ABL, prior to implant therapy, and attend periodically to maintenance consultations
