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Accuracy of 3-Dimensional Virtual Surgical Simulation Combined With Digital Teeth Alignment: A Pilot Study

 Jung-Hoon Kim  ;  Young-Chel Park  ;  Hyung-Seog Yu  ;  Moon-Key Kim  ;  Sang-Hoon Kang  ;  Yoon Jeong Choi 
 Journal of Oral and Maxillofacial Surgery, Vol.75(11) : 2441.e1-2441.e13, 2017 
Journal Title
 Journal of Oral and Maxillofacial Surgery 
Issue Date
Adolescent ; Computer Simulation* ; Female ; Humans ; Imaging, Three-Dimensional* ; Male ; Malocclusion, Angle Class III/diagnostic imaging* ; Malocclusion, Angle Class III/surgery* ; Orthognathic Surgical Procedures/methods* ; Pilot Projects ; Retrospective Studies ; Surgery, Computer-Assisted* ; Tomography, X-Ray Computed* ; Tooth/diagnostic imaging*
PURPOSE: To evaluate the accuracy of virtual surgical simulation combined with digital teeth alignment and the applicability of this technique to the diagnosis and establishment of a 3-dimensional (3D) visualized treatment objective for orthognathic surgery by comparing virtual simulation images with actual post-treatment images. MATERIALS AND METHODS: This retrospective study included patients who underwent computed tomography (CT) before and after treatment. The 3D digital images were constructed from the initial CT images and dental cast scan data, and virtual surgical simulation combined with digital teeth alignment was performed. Accuracy of the virtual simulation was analyzed by comparing the distances of skeletal and dental landmarks in the horizontal, sagittal, and coronal reference planes with those on post-treatment images using the Wilcoxon signed rank test. Intraclass correlation coefficients were calculated to evaluate the degree of concordance between the 2 images. RESULTS: The study sample included 11 patients (mean age, 18.8 yr). Most landmarks had differences smaller than 2 mm in the 3 reference planes between virtual simulation and post-treatment images; these differences were not statistically significant (P > .05). Most skeletal landmarks, except the A point, B point, and gonion, showed normal to high concordance between the virtual simulation and post-treatment images in the 3 reference planes (P < .05); dental landmarks exhibited a broad range of concordance. CONCLUSION: The 3D virtual surgical simulation combined with digital teeth alignment using pretreatment CT images yielded results sufficiently accurate to be used for the diagnosis and establishment of visualized treatment objectives for orthognathic surgery.
Appears in Collections:
1. Journal Papers (연구논문) > 2. College of Dentistry (치과대학) > Dept. of Oral and Maxillofacial Surgery (구강악안면외과학교실)
1. Journal Papers (연구논문) > 2. College of Dentistry (치과대학) > Dept. of Orthodontics (교정과학교실)
Yonsei Authors
강상훈(Kang, Sang Hoon) ; 김문기(Kim, Moon Key) ; 박영철(Park, Young Chel) ; 유형석(Yu, Hyung Seog) ; 최윤정(Choi, Yoon Jeong)
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