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Proceedings Paper

Computer simulation of orthognathic surgery with video imaging
Author(s): Robert Sader; Hans-Florian Uli Zeilhofer; Hans-Henning Horch
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Paper Abstract

Patients with extreme jaw imbalance must often undergo operative corrections. The goal of therapy is to harmonize the stomatognathic system and an aesthetical correction of the face profile. A new procedure will be presented which supports the maxillo-facial surgeon in planning the operation and which also presents the patient the result of the treatment by video images. Once an x-ray has been digitized it is possible to produce individualized cephalometric analyses. Using a ceph on screen, all current orthognathic operations can be simulated, whereby the bony segments are moved according to given parameters, and a new soft tissue profile can be calculated. The profile of the patient is fed into the computer by way of a video system and correlated to the ceph. Using the simulated operation the computer calculates a new video image of the patient which presents the expected postoperative appearance. In studies of patients treated between 1987-91, 76 out of 121 patients were able to be evaluated. The deviation in profile change varied between .0 and 1.6mm. A side effect of the practical applications was an increase in patient compliance.

Paper Details

Date Published: 4 April 1994
PDF: 11 pages
Proc. SPIE 2178, Visual Data Exploration and Analysis, (4 April 1994); doi: 10.1117/12.172070
Show Author Affiliations
Robert Sader, Technische Univ. Muenchen (Germany)
Hans-Florian Uli Zeilhofer, Technische Univ. Muenchen (Germany)
Hans-Henning Horch, Technische Univ. Muenchen (Germany)

Published in SPIE Proceedings Vol. 2178:
Visual Data Exploration and Analysis
Robert J. Moorhead; Deborah E. Silver; Samuel P. Uselton, Editor(s)

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