title: Computer simulation system for orthognathic surgery.
abstract: OBJECTIVE
  The system aimed to make a simulation model of an orthognathic patient without using his/her computed tomography data.
  
  
  METHODS
  The morphological data of the teeth and face were obtained by laser scanner. All the data were integrated in the reference coordinate system of frontal and lateral cephalograms using projection matching technique.
  
  
  METHODS
  A case of mandibular prognathism was analyzed and presented.
  
  
  METHODS
  About 7 mm (left side) to 6 mm (right side) of mandibular setback with a small rotation was performed on this case.
  
  
  RESULTS
  Simulated osteotomies and bone movements help us to analyze the movement of bone and soft tissue. Collisions and gaps generated between bone segments and facial changes are shown.
  
  
  CONCLUSIONS
  This simulation system will be particularly useful for the selection of an optimal operative method in cases in which the change in facial soft tissue shape should be carefully deliberated.
authors: Department of Oral and Maxillofacial Surgery, Saga Medical School, Saga City, Japan. noguchn@post.saga-med.ac.jp
authors: N
authors: N
authors: Noguchi
authors: M
authors: M
authors: Goto
mesh_terms: D002508:Cephalometry; D003198:Computer Simulation; D005145:Face / Q000033:anatomy & histology; D005147:Facial Bones / Q000473:pathology; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007834:Lasers; D008334:Mandible / Q000601:surgery; D056948:Orthognathic Surgical Procedures; D010027:Osteotomy; D010347:Patient Care Planning; D011378:Prognathism / Q000601:surgery; D025321:Surgery, Computer-Assisted