[Computer-assisted development of epitheses after optical recording of facial defects].
A major drawback of conventional impression techniques used for customizing facial prostheses is the fact that pressure applied deforms soft tissue, thus reducing accuracy and causing patient discomfort. A possible solution is the use of optical 3-D coordinate measuring techniques, such as the fringe projection technique, which enables precise and contact-free recording of facial surfaces. The application of this method is demonstrated on a patient who lost his left eye and part of the jaw bone during surgery for cancer. 3-D CAD software that supports the construction of a facial prosthesis from the data obtained has been developed. For this purpose, spline functions are used to define border curves, and the intact half of the face is used as a model for the prosthetic surface. The resulting digital data are used to construct first a model made of synthetic resin, and then a final wax model with the aid of rapid prototyping techniques.
Dirksen
D
D
Institut für Experimentelle Audiologie, Labor für Biophysik, Universitätsklinikum Münster. dirksen@gabor.uni-muenster.de
Runte
C
C
Deleré
H
H
Thomas
C
C
Böröcz
Z
Z
Bollmann
F
F
von Bally
G
G
D017076:Computer-Aided Design / Q000295:instrumentation*; D005134:Eye Neoplasms / Q000601:surgery; D005137:Eye, Artificial; D005153:Facial Neoplasms / Q000601:surgery*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D021621:Imaging, Three-Dimensional / Q000295:instrumentation*; D008297:Male; D019736:Prostheses and Implants; D011474:Prosthesis Design; D014741:Video Recording / Q000295:instrumentation*
Rechnergestützte Gestaltung von Epithesen nach optischer Abformung von Gesichtsdefekten.