Predicting statistical model for three-dimensional morphological analysis of teeth and dentition, and construction of a tooth size database

• Project/Area Number: 19791593
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Orthodontic/Pediatric dentistry
• Research Institution: Health Sciences University of Hokkaido
• Principal Investigator: HAYASHI Kazuo Health Sciences University of Hokkaido, 歯学部, 准教授 (20316269)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,300,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥300,000); Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2007: ¥2,000,000 (Direct Cost: ¥2,000,000)
• Keywords: 歯科矯正学 / 三次元計測 / 咬耗 / 歯列弓形態 / 仮想歯列モデル / 予測モデル

Research Abstract

先ず、韓国人の歯列弓の三次元計測から仮想歯列モデルの構築法を確立した。その仮想歯列弓の解析から第一大臼歯の解剖学的特徴と歯列弓の計測項目との関連性を明らかにし、喪失した第一大臼歯の三次元的形態予測が可能な回帰式を導くことができた。つづいて日本人と韓国人の歯および歯列弓形態の三次元解析を行い、異なる背景を持つ集団における歯および歯列弓形態の違いを明らかにすることができた。具体的には、韓国人と比較して日本人における歯列弓幅径が有意に小さいことが明らかとなった。また個々の歯の三次元形態の計測値データの蓄積も日本人と韓国人の二つの集団で行うことができた。

Research Products

• [Journal Article] A novel statistical model for mandibular helical axis analysis (2009)
  • Author(s): Kazuo Hayashi
  • Journal Title: Journal of Oral Rehabilitation 36 Pages: 102-109
  • Peer Reviewed
• [Journal Article] Finite Helical Axis (FHA)を用いた顎運動解析(第二報)-咀嚼運動解析の可能性 (2008)
  • Author(s): 林一夫、溝口到
  • Journal Title: 日本顎関節学会雑誌 20(1) Pages: 11-15
  • Peer Reviewed
• [Journal Article] 咀嚼運動における平均経路予測モデルの開発 (2008)
  • Author(s): 林一夫、溝口到
  • Journal Title: 北海道医療大学歯学会雑誌 27(1) Pages: 23-28
  • NAID: 110007144203
  • Peer Reviewed
• [Journal Article] Relationship between the curve of Spee and dentofacial morphology evaluated with a three-dimensional reconstruction method in Korean adults (2008)
  • Author(s): Cheon SH, Park YH, Paik KS,Ahn SJ, Hayashi K, Yi WJ, Lee SP
  • Journal Title: American Journal of Orthodontics and Dentofacial Orthopedics 133(5)
  • Peer Reviewed
• [Journal Article] Mandibular helical axis during opening and closing movement (2008)
  • Author(s): Hayashi K, Rich B, DeLong R, Lee SP,Mizoguchi I
  • Journal Title: In silico Dentistry Pages: 80-83
• [Journal Article] Three-dimensional simulation of orthognatic surgery using a multimodal image-fusion technique (2008)
  • Author(s): Mizoguchi I, Uechi J,Shibata T, Tsuji Y, Okayama M, Muguruma T, Hayashi K
  • Journal Title: In silico Dentistry Pages: 125-128
• [Journal Article] Finite Helical Axis(FHA)を用いた顎運動解析(第二報)-咀嚼運動解析の可能性- (2008)
  • Author(s): 林一夫
  • Journal Title: 日本顎関節学会雑誌 20 Pages: 11-15
  • Peer Reviewed
• [Journal Article] Predicting first Molar Width using virtual model od dental arches (2008)
  • Author(s): Seung-Pyo Lee Kazuo Hayashi
  • Journal Title: Clinical anatomy 21 Pages: 27-32
  • Peer Reviewed
• [Journal Article] 咀嚼運動における平均経路予測モデルの開発 (2008)
  • Author(s): 林一夫
  • Journal Title: 北海道医療大学歯学会雑誌 27 Pages: 23-28
  • NAID: 110007144203
  • Peer Reviewed
• [Journal Article] Relationship between the curve of spee and dentofacial morphology evaluated with a three-dimensional reconstru ction method in Korean adults (2008)
  • Author(s): Cheon SH Kazuo Hayashi
  • Journal Title: American Journal of Orthodontics and Dentofacial Orthopedics 133
  • Peer Reviewed
• [Journal Article] Mizoguchi I Three-dimensional analysis of orthodontic tooth movement based on XYZ and finite helical axis systems (2007)
  • Author(s): Hayashi K, Uechi J, Lee SP
  • Journal Title: European Journal of Orthodontics 29(6) Pages: 589-595
  • Peer Reviewed
• [Journal Article] 仮想歯列モデルを用いた歯と歯列弓形態の評価 (2007)
  • Author(s): 林一夫、溝口到
  • Journal Title: 北海道医療大学歯学会雑誌 26(2) Pages: 77-81
  • NAID: 110007144132
  • Peer Reviewed
• [Journal Article] Finite Helical Axis (FHA)を用いた顎運動解析(第一報)-開閉口運動解析の可能性 (2007)
  • Author(s): 林一夫、溝口到
  • Journal Title: 日本顎関節学会雑誌 19(3) Pages: 201-204
  • Peer Reviewed
• [Journal Article] Predicting first molar width using virtual models of dental arches Clinical Anatomy (2007)
  • Author(s): Lee SP, DeLong R, Hodges JS, Hayashi K, Lee JB
  • Journal Title: 21(1) Pages: 27-32
  • Peer Reviewed
• [Journal Article] Finite Helical Axisを用いた剛体の三次元運動解析法 (2007)
  • Author(s): 林一夫
  • Journal Title: 北海道医療大学歯学会雑誌 26(1) Pages: 33-33
• [Journal Article] 仮想歯列モデルを用いた歯と歯列弓の評価 (2007)
  • Author(s): 林 一夫
  • Journal Title: 北海道医療大学歯学会雑誌 26 Pages: 77-81
  • Peer Reviewed
• [Journal Article] Predicting first molar width using virtual models of dental arches (2007)
  • Author(s): Seung-Pyo Lee
  • Journal Title: Clinical Anatomy 21 Pages: 27-32
  • Peer Reviewed
• [Presentation] 仮想歯列モデルを用いた韓国人女性と日本人女性の歯と歯列弓形態の比較 (2009)
  • Author(s): 齋藤貞政, 林一夫
  • Organizer: 第27回北海道医療大学歯学会
  • Place of Presentation: 札幌
  • Year and Date: 2009-02-28
• [Presentation] Comparison of tooth wear of the first molar in Korean and Japanese using quantitative measurement indices (2008)
  • Author(s): Nam SE Kazuo Hayashi
  • Organizer: 7^<th> federation meeting of Korean basic dental scientists
  • Place of Presentation: Seoul
  • Year and Date: 2008-12-02
• [Presentation] Finite helical axis analysis for mandibular kinematics (2008)
  • Author(s): Kazuo Hayashi
  • Organizer: Tha 41th annual scientific congress Korean association of orthodontics
  • Place of Presentation: Seoul
  • Year and Date: 2008-11-06
• [Presentation] 新しい顎運動四次元モデル (2008)
  • Author(s): 林一夫
  • Organizer: 第67回日本矯正歯科学会
  • Place of Presentation: 千葉
  • Year and Date: 2008-09-16
• [Presentation] 新しい顎運動四次元モデル (2008)
  • Author(s): 林一夫
  • Organizer: 第49回北海道矯正歯科学会
  • Place of Presentation: 札幌
  • Year and Date: 2008-06-08
• [Presentation] Mizoguchi I Mandibular helical axis during opening and closing movement (2008)
  • Author(s): Hayashi K, Rich B, DeLong R, Lee SP
  • Organizer: 口と顔のフォーラム2008
• [Presentation] Three-dimensional simulation of orthognatic surgery using a multimodal image-fusion technique (2008)
  • Author(s): Mizoguchi I, Uechi J, Shibata T, Tsuji Y, M,Muguruma T, Hayashi K
  • Organizer: 口と顔のフォーラム2008
• [Presentation] 新しい顎運動四次元モデル (2008)
  • Author(s): 林一夫、上地潤、佐藤陽美、斎藤貞政溝口到
  • Organizer: 第49回北海道矯正歯科学会
• [Presentation] Mizoguchi I Finite helical axis analysis for mandibular kinematics (2008)
  • Author(s): Hayashi k, Lee SP
  • Organizer: The 41th annual scientific congress Korean association of orthodontics
• [Presentation] 汎用性の高いデジタル歯列模型の生成 (2007)
  • Author(s): 水上和博
  • Organizer: 第66回日本矯正歯科学会大会
  • Place of Presentation: 大阪
  • Year and Date: 2007-09-19
• [Presentation] 汎用性の高いデジタル歯列模型の生成 (2007)
  • Author(s): 水上和博、上地潤、林一夫、溝口到
  • Organizer: 第66回日本矯正歯科学会
• [Presentation] 顎運動解析における新しい統計的予測モデルの開発 (2007)
  • Author(s): 林一夫、Brian Reich、佐藤陽美、溝口到
  • Organizer: 第66回日本矯正歯科学会
• [Book] In silico dentistry(Mandibular helical axis during opening and closing movement) (2009)
  • Author(s): Kazuo Hayashi
  • Total Pages: 196
  • Publisher: Medigit corporation
• [Book] In silico dentistry(Three-dimensional simulation of orthodontic surgery using a multimodal image fusion technique) (2009)
  • Author(s): Itaru Mizoguchi
  • Total Pages: 196
  • Publisher: Medigit corporation