title: [The research of SurgiCase CMF software in surgical simulation and prediction for mandibular asymmetry].
abstract: OBJECTIVE
  To evaluate the predictive accuracy of the SurgiCase CMF software in surgical simulation and prediction for mandibular asymmetry with 3-dimensional simulation and measurement.
  
  
  METHODS
  CBCT data of 27 patients with mandibular asymmetry were observed in CMF, and postoperative soft tissue physiognomy were predicted by simulating sagittal ramus osteotomy with or without genioplasty. The measurement parameters representing the symmetry of soft tissue were selected and the horizontal, coronal and sagittal planes were established. The results were analyzed by SPSS 19. 0. The overlap compared color grading charts were observed.
  
  
  RESULTS
  Angles between cheilions and the horizonta plane (Ch-Ch-FH) in the simulation and postoperative soft tissues are (2. 35 ± 1. 81)° and (1. 44 ± 1. 13)°. The angles constructed among subnasale, upper lip and lower lip (Sn-UL-LL) are (4. 02 ± 3. 05)° and (2. 59 ± 1. 64)°, showing statistically different (P < 0. 01, P < 0. 05), which means that predictive accuracy of the lip canting and lip vertical deviation is relatively low. Distance between gonioi and sagittal plane (Go'-MS), distance between gonion and pogonion (Go'-Pog') and angle betweer subnasale to menton and the horizontal plane (Sn-Me'-MS) are not statistically different, which mean! high predictive accuracy of mandibular angle and chin. By observing the overlap compared color gradin-) charts, the predictive accuracy is not good in the cheek, especially in the deviate side.
  
  
  CONCLUSIONS
  The predictive accuracy of CMF system for patients with mandibular asymmetry is relatively high, but it is not good in the lip and cheek. The software improvement is still necessary.
authors.forename: Jingwen
authors.initials: J
authors.lastname: Yang
authors.forename: Min
authors.initials: M
authors.lastname: Hou
authors.forename: Dali
authors.initials: D
authors.lastname: Song
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Deqiang
authors.initials: D
authors.lastname: Han
authors.forename: Tianping
authors.initials: T
authors.lastname: Yu
authors.forename: Xiufen
authors.initials: X
authors.lastname: Wang
mesh_terms: D002508:Cephalometry / Q000379:methods; D002680:Chin / Q000033:anatomy & histology; D054893:Cone-Beam Computed Tomography / Q000379:methods; D005145:Face; D006801:Humans; D008046:Lip / Q000033:anatomy & histology; D008334:Mandible / Q000002:abnormalities* / Q000601:surgery*; D010027:Osteotomy / Q000379:methods*; D012984:Software; D025321:Surgery, Computer-Assisted / Q000379:methods*