Maxillofacial Plastic and Reconstructive Surgery

Korean Association of Maxillofacial Plastic and Reconstructive Surgeons (대한악안면성형재건외과학회)
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Development of New Orthognathic Model Surgery Technique Based on the Reference Points onto the Teeth and the Use of Occlusal Index

치아 기준의 악교정 수술용 석고모형 수술, 과연 가능하고 정확한가

  • Lee, Seung-Hoon (Leader's Dental Clinic) ;
  • Oh, Seong-Seob (21st Century Dental Clinic) ;
  • Yi, Choong-Kook (Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University) ;
  • Park, Kyung-Ran (Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University) ;
  • Lee, Sang-Hwy (Department of Oral and Maxillofacial Surgery and Applied Life Science, Oral Science Research Center, Oral Cancer Research Institute, Brain Korea 21 Project, College of Dentistry, Yonsei University)
  • 이승훈 (리더스치과의원) ;
  • 오성섭 (21세기치과병원) ;
  • 이충국 (연세대학교 치과대학 구강악안면외과학교실) ;
  • 박경란 (연세대학교 치과대학 구강악안면외과학교실) ;
  • 이상휘 (연세대학교 치과대학 구강악안면외과학교실, 구강과학연구소, 구강종양연구소)
  • Received : 2010.12.27
  • Accepted : 2011.02.24
  • Published : 2011.03.31
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Abstract

Purpose: Errors in orthognathic model surgery occur during the planning, measuring and/or moving of the models. However, there has been little effort to find ways to reduce these errors. In this study, we introduce a new orthognathic model surgery technique (Yonsei method) which adopts the tooth point as the reference and the occlusal index as a moving vehicle for the model. Methods: The technique consists mainly of: 1) measuring the three-dimensional lengths of model points, 2) fabricating and moving the occlusal index and 3) verifying the movement. Then we compared the accuracy of the Yonsei method to conventional methods, with special reference made to influencing factors. Results: Errors for the Yonsei method with the occlusal index were reduced to the range of 0.61~1.04 mm in three-dimension, providing a more accurate model surgery technique than conventional methods which have errors ranging from 0.77~3.11 mm. Conclusion: It provided us a more accurate model surgery technique based on the reference points onto the teeth and the use of occlusal index.

Keywords

References

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