Summary
We report on our experience using a new endosseous implant designed to provide sufficient
retention to various types of facial prostheses.
In a preclinical animal experiment implants (N=12, 4×3.5 mm) were placed in the frontal calvarial region of nine adult pigs. The animals were
sacrificed at 2, 4 and 8 weeks to evaluate the implant incorporation microradiographically.
The clinical outcome and patient satisfaction of implant-retained prostheses were
evaluated in a group of 10 patients with facial defects by using clinical assessment
and standardized questionnaires for patients and relatives. In the prospective clinical
study 33 identical modified implants for extraoral anchorage were placed for the fixation
of various prostheses in the midfacial (eye, nose) and ear regions in the course of
a clinical trial and observed over a follow-up period of 34 months.
The bone-implant contact in the animal experiment reached 31% (±2) at 2 weeks, 39%
(±1) after 4 weeks and 51% (±5) at 8 weeks. In the clinical trial, no implants were
lost and all implants remained osseointegrated as confirmed clinically and radiographically,
providing a stable prosthetic restoration. The analysis of the questionnaire indicates
an improvement of the quality of life of patients with respect to aesthetic and psychological
well-being.
The results demonstrate that extraoral implants not only achieve sufficient osseointegration
but also show good clinical handling and easy fixation possibilities for prosthetic
anchorage.
Keywords
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Article info
Publication history
Published online: February 02, 2007
Accepted:
December 7,
2005
Received:
March 28,
2005
Identification
Copyright
© 2006 British Association of Plastic, Reconstructive and Aesthetic Surgeons. Published by Elsevier Inc. All rights reserved.
