An interactive on-line computer system is described with application in orthognathic surgery. Both the hardware and software of the system are discussed. The application of the system is outlined under the various features of the system's software. The general software collects, stores and analyses graphic data such as from cephalometric radiographs and facial and dental photographs. The specific software handles the planning requirements of orthognathic surgery--diagnosis, treatment planning and prediction of post-operative soft-tissue profile.
