Avaliação clínico-radiográfica e estabilidade implantar em overdenture mandibular retida por implante unitário

• Ano de defesa: 2014
• Autor(a) principal: Nogueira, Túlio Eduardo
• Orientador(a): Leles, Cláudio Rodrigues
• Banca de defesa: Leles, Cláudio Rodrigues, Ribeiro-Rotta, Rejane Faria, Marra, Juliê
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Programa de Pós-graduação em Odontologia (FO)
• Departamento: Faculdade de Odontologia - FO (RG)
• País: Brasil
• Palavras-chave em Português: Implante dentário; Overdenture mandibular; Reabilitação oral
• Palavras-chave em Inglês: Dental implant; Mandibular overdenture; Oral rehabilitation
• Área do conhecimento CNPq: ODONTOLOGIA::CLINICA ODONTOLOGICA
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tede/4208

Objective: To conduct a longitudinal evaluation of marginal bone loss, peri-implant aspects and stability in single implant used to retain mandibular overdenture, and to evaluate outcomes related to the overdenture. Methods: Forty-five completely edentulous individuals were treated using mandibular overdenture retained by a single implant (Titamax IT Cortical, Neodent, Curitiba, Brazil) opposed to conventional dentures. According to the primary stability obtained in the implant placement patients were treated with an immediate loading protocol when torque was at least 30 Ncm and implant stability quotient (ISQ) at least 60. In cases of values below cited conventional loading protocol were adopted. O’Ring attachment system from two different commercially available companies were used and allocated systematically between subjects. Follow-up evaluations were performed immediately and at 3 and 6 months after implant placement, when parameters related to implant stability, periimplant tissue aspects, implant survival rate and need for the maintenance of the overdenture were noted. Results: 38 (84.4%) of 45 patients received immediate loaded implants. Implant failure occurred in 3 cases, 2 of them in the conventional loading group (early loss before implant loading). There was an increase in ISQ values in subsequent periods after implant placement, evidenced between baseline and 6 months (p=0.004) and between 3 and 6 months (p<0.001). The mean marginal bone loss at follow-up was 0.50 mm (SD=0.66). It was observed gradual reduction of the gingival height up to 6 months (p=0.006), as well as progressive reduction in plaque index (p=0.028) and bleeding on probing (p=0.021). There was no difference in clinical condition concerning the attachments that were compared. However, Neodent attachments showed better clinical performance and lower replacement rates (p=0.014). Conclusion: This clinical study suggested that the single implant-retained mandibular overdenture is a feasible treatment for mandibular edentulousness, showing favorable clinical and radiographic periimplant outcomes as well as maintenance of the implant stability.