Patent KR-20130075305-A (KR)
Title: Simulation method, recorder and apparatus for orthognathic surgery
Inventor: LIM SUNG HOON
IPC: A61C19/05
Filed: 2011-12-27
Abstract: PURPOSE: A jaw correction surgery simulation method, a recording medium, and an apparatus thereof are provided to know the union relation after procedure or correction, and to manufacture a surgical splint corresponding to the simulation conveniently. CONSTITUTION: A jaw correction surgery simulation method comprises the steps of: scanning each model of top and bottom vice, maxillary, and mandible, and producing a neutroclusion digital dentition model after assembling each of the scanned model (S110); separating model comprising at least one among soft body, surgical hook, correction bracket, teeth, and bone, and processing the neutroclusion digital dentition model as 3D image (S120); overlapping the top and bottom vice of the neutroclusion digital dentition model on the bracket, dentition, hook, and soft body (S130); forming proximal fragment which will be moved in surgery by segmenting the 3D-processed jaw bone and soft body according to the predicted disconnecting line (S140); moving the neutroclusion digital dentition model, mandible centrifugal segment attached on the neutroclusion digital dentition model, correction bracket, hook, and soft body (S150); forming a surgical correction dentition model by assembling the real model corresponding to the union relation of the simulated top and bottom vice dentition model, and producing a surgical correction digital dentition of the model by scanning the formed surgical correction dentition model (S190); overlapping the surgical correction digital dentition model on the top jaw of the neutroclusion digital dentition model which is overlapped on the dentition separated from CT image in the previous step (S200); verifying the adequacy of the surgical correction through evaluating the result by moving the mandible centrifugal segment and related tissue (S220). [Reference numerals] (AA) Start; (BB) End; (S110) Neutroclusion digital dentition model is produced; (S120) Each model is separated from a CT image and model and neutroclusion digital dentition model are treated as 3-dimensional image; (S130) Top and bottom vice of the neutroclusion digital dentition model are overlapped in the soft body if it is the hook for top and bottom vice dentition and orthodontic bracket and operation, and palate; (S140) Jaw bone and soft tissue are formed based on 3D images; (S150) Neutroclusion digital dentition model and the mandible centrifugal segment, which here is adhered the hook for the orthodontic bracket and the operation, separated from the CT image the soft body etc. are moved; (S190) It fits to the simulated union relation of top and bottom vice dentition model and the real model is assembled and the operation overbite dentition model is formed. And the formed operation overbite dentition model is scanned and the operation overbite digital dentition model is produced; (S200) In the backward course, the operation overbite digital dentition model is overlapped in the maxillary overlapped in the dentition separated from the CT image of the neutroclusion digital dentition model; (S210) Lower jaw bone and related tissues are moved to be overlapped with the lower jaw bone of operation overbite dentition models; (S220) By the mandible centrifugal segment and linkage organization being together moved and evaluating the result the adequacy of the operation overbite is verified; (S230a) Splint is manufactured using dentition models when operation is appropriate; (S230b) Steps from S150 are repeated when operation verifying results are failed