Simulation of postoperative 3D facial morphology using a physics-based head model

Yoshimitsu Aoki, Shuji Hashimoto, Masahiko Terajima, Akihiko Nakasima

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


We propose a prototype of a facial surgery simulation system for surgical planning and the prediction of facial deformation. We use a physics-based human head model. Our head model has a 3D hierarchical structure that consists of soft tissue and the skull, constructed from the exact 3D CT patient data. Anatomic points measured on X-ray images from both frontal and side views are used to fire the model to the patient's head. The purposes of this research is to analyze the relationship between changes of mandibular position and facial morphology after orthognathic surgery, and to simulate the exact postoperative 3D facial shape. In the experiment, we used our model to predict the facial shape after surgery for patients with mandibular prognathism. Comparing the simulation results and the actual facial images after the surgery shows that the proposed method is practical.

Original languageEnglish
Pages (from-to)121-131
Number of pages11
JournalVisual Computer
Issue number2
Publication statusPublished - 2001 Mar
Externally publishedYes


  • Head modeling
  • Orthodontics
  • Physics-based deformation
  • Surgical simulation
  • X-ray image

ASJC Scopus subject areas

  • Software
  • Computer Vision and Pattern Recognition
  • Computer Graphics and Computer-Aided Design


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