Development of dental operation and diagnosis simulation system using volume rendering

2003 Fiscal Year Final Research Report Summary

• Project/Area Number: 13557176
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 展開研究
• Research Field: Surgical dentistry
• Research Institution: Osaka University
• Principal Investigator: SOHMURA Taiji SOHMURA,Taiji, 歯学研究科, 助教授 (10154692)
• Co-Investigator(Kenkyū-buntansha): NAKAMURA Takashi Osaka University, Graduate School of Dentistry, Assoc. Prof., 大学院・歯学研究科, 助教授 (20198211) ; TAKAHASHI Junzo Osaka University, Graduate School of Dentistry, Professor, 大学院・歯学研究科, 教授 (80029149) ; KOGO Mikihiko Osaka University, Graduate School of Dentistry, Professor, 大学院・歯学研究科, 教授 (20205371) ; YOSHIDA Atsushi Osaka University, Graduate School of Dentistry, Professor, 大学院・歯学研究科, 教授 (90201855)
• Project Period (FY): 2001 – 2003
• Keywords: volume rendering / dental surgery simulation / dental surgery simulation / implant / osteotomy / 3D measurement / cleft of lip and palate / computer / virtual reality

Research Abstract

By operating 3D surface and volume data of the dentition and the face measured by 3D shape measuring system VIVID 900 or X ray-CT by using virtual reality haptic devise PHANToM, the following dental operation and the diagnosis support system were developed.
(1)The implant operation support: The simulation of bone drilling and implant insertion could be accomplished. The CAD/CAM fabrication of stent that is a guide for bone drilling for implant insertion considering the condition of bone could be accomplished.
(2)The simulation of osteotomy : The 3D CT image of cranial bone was operated by cutting and rearranging using PHANToM. The space and the amount of interference between bone pieces by the movement and the rotation of the bone pieces for rearrangement could be simulated quantitatively and observed by CG image. The bone model could be constructed using a Rapid Prototyping system.
(3)The removal of the artifact of the CT image in the oral area originated by metallic restorations: The dental cast was also measured by CT and the image was registered to that of cranial bone, and the cast image were replaced with damaged image around oral area.
(4)The 3D measurement of the dentition model by CT: The dental cast model was measured by using medical CT with excellent effectiveness comparing with laser measurement.

Research Products

• [Publications] Kitagawa, T., Kohara, H., Sohmura, T., Takahashi, J., Tachimura, T., Kogo, M.: "Dentoalveolar Growth of Complete UCLP Patients by Early Two-Stage Furlow and Push Back Method ; Preliminary Results"Cleft Palate-Cran J.. (accepted). (2003)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Kitagawa, T., Kohara, H., Sohmura, T., Takahashi, J., Enomoto, A., Tanaka, E, Matsuya, T., Kogo, M.: "How to Inhibit Postoperative Palatal Contraction Following Palatoplasty? Dental Arch Development due to Artificial Anti- molding Action and Natural Molding Action : Clinical Trial"Ann.Plastic.Surg.. 52(4). 333-339 (2004)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Nagao M, Sohmura T, Kinuta S, Kojima T, Wakabayashi K, Nakamura T, Takahashi J: "Application of Dentition and Facial Morphology Integration System for Occlusal Correction."Dent Mater J. 23(1). 24-30 (2004)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Sohmura T, Nagao M, Sakai M, Wakabayashi K, Kojima T, Kinuta S, Nakamura T, Takahashi J: "High-resolution 3-D shape integration of dentition and face measured by new laser scanner."IEEE Trans Medical Imaging. (accepted). (2004)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Sohmura T, Hojo H, Nakajima M, Wakabayashi K, Nagao M, Iida S, Kitagawa T, Kogo M, Kojima T, Matsumura K, Nakamura T, Takahashi J: "A Prototype of Simulation of Orthognathic Surgery Using a Virtual Reality Haptic Device"Int J Ora Maxil Surg. (accepted). (2004)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Sohmura T, Wakabayashi K, Lowmunkong R, Hojo H, Kusumoto N, Okuda H, Kojima T, Nakamura T, Yatani H, Takahashi J: "3D Shape Measurement of Dental Cast Using Medical X-ray CT."Dent Mater J. (accepted). (2004)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Sohmura T, Hojo H, Kusumoto N, Nishida M, Lowmunkong R, Wakabayashi K, Nakamura T, Takahashi J, Yatani H: "A novel method of removing artifact due to metallic dental restorations in facial bone 3-D CT image"Int J Ora Maxil Surg. (accepted). (2004)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Kitagawa, T., Kohara, H., Sohmura, T., Takahashi, J., Tachimura, T., Kogo, M.: "Dentoalveolar Growth of Complete UCLP Patients by Early Two-Stage Furlow and Push Back Method; Preliminary Results"Cleft Palate-Cran J.. (accepted 25 July 2003).
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Kitagawa, T., Kohara, H., Sohmura, T., Takahashi, J., Enomoto, A., Tanaka, E, Matsuya, T., Kogo, M.: "How to Inhibit Postoperative Palatal Contraction Following Palatoplasty? Dental Arch Development due to Artificial Anti-molding Action and Natural Molding Action : Clinical Trial"Ann.Plastic.Surg.. 52(4). 333-339 (2004)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Nagao M, Sohmura T, Kinuta S, Kojima T, Wakabayashi K, Nakamura T, Takahashi J.: "Application of Dentition and Facial Morphology Integration System for Occlusal Correction."Dent Mater J. 23(1). 24-30 (2004)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Sohmura T, Nagao M, Sakai M, Wakabayashi K, Kojima T, Kinuta S, Nakamura T, Takahashi J.: "High-resolution 3-D shape integration of dentition and face measured by new laser scanner."IEEE Trans Medical Imaging. (accepted 14 Jan.2004).
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Sohmura T, Hojo H, Nakajima M, Wakabayashi K, Nagao M, Iida S, Kitagawa T, Kogo M, Kojima T, Matsumura K, Nakamura T, Takahashi J.: "A Prototype of Simulation of Ortho-gnathic Surgery Using a Virtual Reality Haptic Device"Int.J.Ora.Maxil Surg.. (accepted 9, Feb.2004).
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Sohmura T, Wakabayashi K, Lowmunkong R, Hojo H, Kusumoto N, Okuda H, Kojima T, Nakamura T, Yatani H, Takahashi J.: "3D Shape Measurement of Dental Cast Using Medical X-ray CT"Dent.Mater.J.. (accepted 14 Jan. 2004).
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Sohmura T, Hojo H, Kusumoto N, Nishida M, Lowmunkong R, Wakabayashi K, Nakamura T, Takahashi J, Yatani H.: "A novel method of removing artifact due to metallic dental restorations in facial bone 3-D CT image"Int.J.Ora.Maxil Surg. (accepted 30, April 2004).
  • Description: 「研究成果報告書概要(欧文)」より