Journal of the Korean Association of Oral and Maxillofacial Surgeons

The Korean Association of Oral and Maxillofacial Surgeons (대한구강악안면외과학회)
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IMAGE FUSION ACCURACY FOR THE INTEGRATION OF DIGITAL DENTAL MODEL AND 3D CT IMAGES BY THE POINT-BASED SURFACE BEST FIT ALGORITHM

Point-based surface best fit 알고리즘을 이용한 디지털 치아 모형과 3차원 CT 영상의 중첩 정확도

  • Kim, Bong-Chul (Medical battalion, The 6th infantry division, ROK Army) ;
  • Lee, Chae-Eun (Oral Science Research Center, College of Dentistry, Yonsei University) ;
  • Park, Won-Se (Department of General Dentistry, College of Dentistry, Yonsei University) ;
  • Kang, Jeong-Wan (Department of Oral & Maxillofacial Surgery, College of Dentistry, Yonsei University) ;
  • Yi, Choong-Kook (Department of Oral & Maxillofacial Surgery, College of Dentistry, Yonsei University) ;
  • Lee, Sang-Hwy (Department of Oral & Maxillofacial Surgery, College of Dentistry, Yonsei University)
  • 김봉철 (육군 제6 보병사단 의무근무대) ;
  • 이채은 (연세대학교 치과대학 구강과학연구소) ;
  • 박원서 (연세대학교 치과대학 통합진료과) ;
  • 강정완 (연세대학교 치과대학 구강악안면외과학교실) ;
  • 이충국 (연세대학교 치과대학 구강악안면외과학교실) ;
  • 이상휘 (연세대학교 치과대학 구강악안면외과학교실)
  • Published : 2008.10.31
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Abstract

Purpose: The goal of this study was to develop a technique for creating a computerized composite maxillofacial-dental model, based on point-based surface best fit algorithm and to test its accuracy. The computerized composite maxillofacial-dental model was made by the three dimensional combination of a 3-dimensional (3D) computed tomography (CT) bone model with digital dental model. Materials and Methods: This integration procedure mainly consists of following steps : 1) a reconstruction of a virtual skull and digital dental model from CT and laser scanned dental model ; 2) an incorporation of dental model into virtual maxillofacial-dental model by point-based surface best fit algorithm; 3) an assessment of the accuracy of incorporation. To test this system, CTs and dental models from 3 volunteers with cranio-maxillofacial deformities were obtained. And the registration accuracy was determined by the root mean squared distance between the corresponding reference points in a set of 2 images. Results and Conclusions: Fusion error for the maxillofacial 3D CT model with the digital dental model ranged between 0.1 and 0.3 mm with mean of 0.2 mm. The range of errors were similar to those reported elsewhere with the fiducial markers. So this study confirmed the feasibility and accuracy of combining digital dental model and 3D CT maxillofacial model. And this technique seemed to be easier for us that its clinical applicability can good in the field of digital cranio-maxillofacial surgery.

Keywords

References

  1. Xia J,Ip HH,Samman N,Wang D,Kot CS,Yeung RW,et al: Computer-assisted surgical planning and simulation: 3D virtual osteotomy. Int J Oral Maxillofac Surg 2000;29:11-17 https://doi.org/10.1016/S0901-5027(00)80116-2
  2. Xia J,Samman N,Yeung RW,Shen SG,Wang D,Ip HH,et al: Three-dimensional virtual reality surgical planning and simulation workbench for orthognathic surgery. Int J Adult Orthod Orthognath Surg 2000;14:265-282
  3. Santler G,Karcher H,Ruda C: Indications and limitations of threedimensional models in cranio-maxillofacial surgery. J Craniomaxillofac Surg 1998;26:11-16 https://doi.org/10.1016/S1010-5182(98)80029-2
  4. Nkenke E,Zachow S,Benz M,Maier T,Veit K,Kramer M,et al: Fusion of computed tomography data and optical 3D images of the dentition for streak artefact correction in the simulation of orthognathic surgery. Dentomaxillofac Radio 2004;33:226-232 https://doi.org/10.1259/dmfr/27071199
  5. 김봉철,박원서,강연희,이충국,유형석,강석진 등: 악교정 수술 을 위한 디지털 모형 수술의 정확성 평가. 대한악안면성형재건외 과학회지 2007;29:520-526
  6. Gateno J,Xia J,Teichgraeber J,Rosen A: A new technique for the creation of a computerized composite skull model. J Oral Maxillofac Surg 2003;61:222-227 https://doi.org/10.1053/joms.2003.50033
  7. Swennen G,Barth E,Eulzer C,Schutyser F: The use of a new 3D splint and double CT scan procedure to obtain an accurate anatomic virtual augmented model of the skull. Int J Oral Maxillofac Surg 2007;36:146-152 https://doi.org/10.1016/j.ijom.2006.09.019
  8. Uechi J,Okayama M,Shibata T,Muguruma T,Hayashi K,Endo K et al: A novel method for the 3-dimensional simulation of orthognathic surgery by using a multimodal image-fusion technique. Am J Orthod Dentofacial Orthop 2006;130:786-798 https://doi.org/10.1016/j.ajodo.2006.03.025
  9. Xia J,Gateno J,Teichgraeber J: Three-dimensional computer-aided surgical simulation for maxillofacial surgery. Atlas Oral Maxillofacial Surg Clin N Am 2005;13:25-39 https://doi.org/10.1016/j.cxom.2004.10.004