title: Mathematical modeling and numerical simulation in maxillo-facial virtual surgery (VISU).
abstract: Computer-based surgery simulation is a rapidly emerging and increasingly important area of research that combines a number of disciplines for the common purpose of improving healthcare. The objective of this paper is to provide a virtual surgery (VISU) tool for accurately planning the aesthetic impact of hard and soft tissue movements in dento-skeletal malocclusions. The approach proposed here allows direct interaction with a completely three-dimensional (3-D) computed tomography (CT) model of a solid, highly detailed structure of the head to obtain a realistic prediction of soft tissue behavior. We studied 25 patients who had facial malformations pre- and postoperatively with 3-D hard and soft tissue CT studies, and maxillary or mandibular osteotomies were simulated. The postoperative 3-D CT and facial outcomes were compared with the simulations. In 80% of the cases studied, the simulation-predicted changes, when compared with the clinical outcomes, were within the tolerance level (2 mm) established by maxillo-facial surgeons.
authors.affiliation: Department of Odontostomatological Sciences, University of Bologna, Italy. claudio.marchetti@bo.nettuno.it
authors.forename: Claudio
authors.initials: C
authors.lastname: Marchetti
authors.forename: Alberto
authors.initials: A
authors.lastname: Bianchi
authors.forename: Massimo
authors.initials: M
authors.lastname: Bassi
authors.forename: Roberto
authors.initials: R
authors.lastname: Gori
authors.forename: Claudio
authors.initials: C
authors.lastname: Lamberti
authors.forename: Alessandro
authors.initials: A
authors.lastname: Sarti
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003198:Computer Simulation; D005145:Face / Q000601:surgery; D005260:Female; D005544:Forecasting; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods; D008297:Male; D008310:Malocclusion / Q000601:surgery; D008334:Mandible / Q000601:surgery; D008437:Maxilla / Q000601:surgery; D008953:Models, Anatomic; D019647:Oral Surgical Procedures; D010027:Osteotomy / Q000379:methods; D019340:Osteotomy, Le Fort / Q000379:methods; D010347:Patient Care Planning; D025321:Surgery, Computer-Assisted; D014057:Tomography, X-Ray Computed / Q000379:methods; D016896:Treatment Outcome; D014584:User-Computer Interface