title: Orbit rehabilitation with extraoral implants: impact of radiotherapy.
abstract: OBJECTIVE
  The aim of the study was to compare the success rates of osseointegration among irradiated and nonirradiated cases submitted to implant placement for anchorage of orbit prostheses from 2003 to 2011.
  
  
  METHODS
  Charts of 45 consecutive patients were analyzed, 31 men and 14 women, and they were divided in two groups, considering previous irradiation therapy. Nonirradiated group had 33 patients, and irradiated group had 12 patients. In total, 138 implants were installed, 42 (30.4%) in previously irradiated bone.
  
  
  RESULTS
  The overall implant survival rate was 96.4% with a success rate of 99.0% among the nonirradiated patients and 90.5% among the irradiated patients (p = 0.03).
  
  
  CONCLUSIONS
  Results showed that irradiated sites had a worse prognosis related to success of osseointegration, although the 90.5% survival rate in this group indicates that implant placement is a feasible alternative to anchor orbit prostheses considering the benefits that this technique offers to patients.
authors.affiliation: post-graduation, Dental School, UNIP, São Paulo, Brazil.
authors.forename: Reinaldo
authors.initials: R
authors.lastname: Guedes Junior
authors.forename: Monica Marcelino Pires de
authors.initials: MM
authors.lastname: Mello
authors.forename: Joaquim Augusto Piras de
authors.initials: JA
authors.lastname: Oliveira
authors.forename: Vanessa Arias
authors.initials: VA
authors.lastname: Pecorari
authors.forename: Márcio
authors.initials: M
authors.lastname: Abrahão
authors.forename: Ulf
authors.initials: U
authors.lastname: Nannmark
authors.forename: Luciano Lauria
authors.initials: LL
authors.lastname: Dib
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016371:Cranial Irradiation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D020273:Orbital Implants; D016348:Osseointegration; D011474:Prosthesis Design; D011475:Prosthesis Failure; D019919:Prosthesis Implantation; D012189:Retrospective Studies; D012307:Risk Factors; D015996:Survival Rate; D016896:Treatment Outcome
keywords: extraoral implants; irradiation; orbit rehabilitation; survival rate