Extra-oral craniofacial endosseous implants and radiotherapy

Implant-retained nasal prosthesis for reconstruction of large rhinectomy defects: the Salisbury experience

“…Radiotherapy is often used in the treatment of nasal cancers and is known to be associated with increased frequency of implant failure [1][2][3]5,[9][10][11][12]14,18,24 . In the present study, implant failure was more common in patients who had radiotherapy (14%).…”

“…Increasing experience with implant-retained craniofacial prostheses has allowed satisfactory reconstruction of isolated auricular, orbital and nasal defects in addition to complex defects involving multiple craniofacial structures [1][2][3][4]8,[12][13][14][15][17][18][19][20]22,24 . This experience has been largely limited to specialized centres in Canada, Sweden and the USA and the available literature is often in the form of multi-institutional studies evaluating implant-retained prostheses used to reconstruct multiple sites 1,2,[12][13][14][15][17][18][19]22,24 .…”

“…A literature review documented 128 implants placed in the nasal skeleton to retain nasal prostheses of which 23 were placed within a field of radiotherapy. The success rates were 60-100% in patients who had not received radiotherapy and 50-100% in patients who had received radiotherapy 1,3,8,[11][12][13][14][15]17,22,24 . Little information is available on the technical aspects of the procedure or the factors influencing the success of these implants and the retained prosthesis.…”

Uso de Implantes Zigomáticos na Fixação de Próteses Bucomaxilofaciais

“…Próteses bucomaxilofaciais implanto suportadas têm sido utilizadas satisfatoriamente na reconstrução de orelhas, defeitos nasais e oculares, e defeitos complexos envolvendo várias estruturas craniofaciais. 1,2,3,12,14 A localização e a orientação dos implantes craniofaciais é fundamental para alcançar o sucesso do resultado. O desenvolvimento da fixação zigomática veio com o objetivo de solucionar os casos de pacientes vítimas de traumas ou cirurgias de remoção de tumores, onde existe grande perda das estruturas maxilares.…”

Guided implant surgery on oral cancer patients: in vitro study

“…The ablation of oral tissues and radiotherapy make many patients unable to wear conventional prostheses, and these patients are thus candidates for oral rehabilitation with osseointegrated implants [1]. According to several authors [2], anti-cancer treatments induce a significant variation in osseointegration rate.…”