Avaliação da taxa de sucesso dos implantes extraorais usados para a retenção de próteses faciais: comparação entre diferentes regiões anatômicas

Resumo (EN)

The use of extraoral implants for the fixation of prostheses in the orbital, nasal, and auricular regions has been shown to be an excellent method of support, retention, and stability. It also provides patients with a better appearance and quality of life. The objective of the present study was to evaluate and compare the rates of success of extraoral implants for the fixation of facial prostheses in different anatomical regions. The present study presents the results of 68 patients with facial defects who were rehabilitated with 138 osseointegrated implants for prosthetic fixation in the orbital, nasal, and auricular regions performed by the same team between 2003 and 2012. The facial implanted regions were evaluated according to the rate of success of the extraoral implants, previous radiotherapy, and success of the prosthesis. Among the 68 patients, 48 had defects in the orbital region, nine had defects in the nasal region, and 11 had defects in the auricular region. After a minimum period of 3 months of osseointegration, prostheses anchored by extraoral implants were fabricated. After the completion of treatment, the patients were monitored for 11 to 111 months. The rates of cumulative survival were 95.9% for the orbital region, 92.9% for the nasal region, and 92% for the auricular region. The success rates of osseointegration for fixed implants in regions that had been previously subjected to radiotherapy were 90.3% for the orbital region and 100% for the auricular region. No radiotherapy treatment was performed in the nasal region. No significant differences were found between the implant survival rates with regard to anatomical region or regions previously irradiated.