title: Computer-assisted three-dimensional surgical planing and simulation. 3D soft tissue planning and prediction.
abstract: The purpose of this paper is to report a new technique for three-dimensional facial soft-tissue-change prediction after simulated orthognathic surgical planning. A scheme for soft tissue deformation, "Computer-assisted three-dimensional virtual reality soft tissue planning and prediction for orthognathic surgery (CASP)", is presented. The surgical planning was based on three-dimensional reconstructed CT visualization. Soft tissue changes were predicted by two newly devised algorithms: Surface Normal-based Model Deformation Algorithm and Ray Projection-based Model Deformation Algorithm. A three-dimensional color facial texture-mapping technique was also used for generating the color photo-realistic facial model. As a final result, a predicted and simulated patient's color facial model can be visualized from arbitrary viewing points.
authors.affiliation: Oral & Maxillofacial Surgery, Prince Philip Dental Hospital, University of Hong Kong, SAR.
authors.forename: J
authors.initials: J
authors.lastname: Xia
authors.forename: N
authors.initials: N
authors.lastname: Samman
authors.forename: R W
authors.initials: RW
authors.lastname: Yeung
authors.forename: D
authors.initials: D
authors.lastname: Wang
authors.forename: S G
authors.initials: SG
authors.lastname: Shen
authors.forename: H H
authors.initials: HH
authors.lastname: Ip
authors.forename: H
authors.initials: H
authors.lastname: Tideman
mesh_terms: D000465:Algorithms; D003116:Color; D003198:Computer Simulation; D005145:Face / Q000033:anatomy & histology / Q000601:surgery; D005544:Forecasting; D006801:Humans; D021621:Imaging, Three-Dimensional; D019767:Maxillofacial Abnormalities / Q000601:surgery; D008953:Models, Anatomic; D019647:Oral Surgical Procedures / Q000379:methods*; D056948:Orthognathic Surgical Procedures; D010027:Osteotomy / Q000379:methods; D010347:Patient Care Planning; D013813:Therapy, Computer-Assisted / Q000379:methods*; D014057:Tomography, X-Ray Computed; D014584:User-Computer Interface