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Abstracts: ASAIO Bioengineering/tissue Engineering Abstracts

PREOPERATIVE OF 3D PLASTIC REPLICA FOR SURGERY PLANNING WITH STEREO LITHOGRAPHY – APPLICATION OF ORAL SURGERY PLANNING

Kawashima, Norimichi; Niikura, Yoshihiro; Sato, Toshio; Iida, Yukiyasu; Tsuji, Kiichi; Imamura, Eisaku

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3D replica with stereo lithography reconstructed from patient’s CT images clearly shows the position of the canal and the simulation of amputation process on workstations is a good support for the surgeon to determine the actual amputation line. It is easy for the surgeon to identify implant size using a 3D plastic replica since complicated oral cavities can be reproduced in preoperative examinations. We applied stereo lithography in jaw deformity surgery. The patient’s preoperative findings showed maxillary deficiency and mandibular protrusion. Using the patient’s CT image, a preoperative 3D plastic replica of her skull was produced with stereo lithography (Rapid Maister 8000,CMET, Japan). Using the 3D plastic replica thus obtained, preoperative simulations such as simulation for mandible, osteotomy with a bone saw of osteotomy of maxilla, and maxilla formation were carried out. After the maxilla and mandible positioning, the position of bite became normal. Her facial profile became normal after the surgery. No difference was found between the preoperative simulation and the observation in the surgery for the osteotomy of the complicated part located from maxilla to os sphenoidale. The amount of bleeding was suppressed and the operation was conducted favorably. The 3D plastic replica prepared with stereo lithography was effective for surgery planning.

Copyright © 2005 by the American Society for Artificial Internal Organs