RESUMO
Forty-one complete mandibular subperiosteal implant-supported and retained dentures were consecutively inserted between 1952 and 1971, and patients were monitored through 1992. After variables and methods of follow-up were described, the implants were divided into three categories: 14 (34%) nonfunctional implants, 9 (22%) functioning implants, and 18 (44%) functional implants prematurely terminated by death or cause unrelated to implant condition. Five percent of the implants failed by 5 years, 22% failed by 10 years, 34% failed by 20 years, and none failed after 20 years. Nine implants were still functioning 21 to 36 years after insertion, of which five were functioning for more than 30 years. The implants that were developed later were notably superior to earlier implants. The results of this review could be interpreted to suggest consideration of mandibular subperiosteal implants for selected patients, particularly those with resorbed mandibles.
Assuntos
Implante Dentário Subperiósteo , Implantes Dentários , Arcada Edêntula/cirurgia , Mandíbula/cirurgia , Adulto , Reabsorção Óssea/reabilitação , Implante Dentário Subperiósteo/efeitos adversos , Implante Dentário Subperiósteo/instrumentação , Implantes Dentários/efeitos adversos , Planejamento de Prótese Dentária , Falha de Equipamento , Feminino , Seguimentos , Humanos , Arcada Edêntula/diagnóstico por imagem , Arcada Edêntula/reabilitação , Masculino , Mandíbula/diagnóstico por imagem , Doenças Mandibulares/reabilitação , Pessoa de Meia-Idade , Doenças Periodontais/diagnóstico por imagem , Doenças Periodontais/patologia , Periodonto/anatomia & histologia , RadiografiaRESUMO
Follow-up, maintenance, and treatment of complications of 81 mandibular subperiosteal implants placed at the University of Southern California Advanced Prosthodontic Clinic were recorded for periods up to 21 years. Few patients were lost to follow-up, but a significant number of patients died before termination of the study. A 10-year survival rate of 79% was calculated for 63 patients, and a 15-year survival rate of 60% was calculated for 34 patients. It was found that subperiosteal implants have a low long-term survival rate, and the rate of loss of subperiosteal implants increases over time without reaching a steady state. However, subperiosteal implant therapy did provide function for patients who otherwise could not use dentures.