A Method for Diagnosis of Mechanical Strength of Tooth Enamel

• Project/Area Number: 22700461
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Biomedical engineering/Biological material science
• Research Institution: Hokkaido University
• Principal Investigator: FUJISAKI Kazuhiro 北海道大学, 大学院・工学研究院, 助教 (90435678)
• Project Period (FY): 2010 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2010: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: バイオメカニクス / X線 / 結晶配向 / 歯学 / 生体材料 / ひずみ

Research Abstract

The tooth enamel is the hardest and most highly mineralized tissue in the human body. As apatite components in mineralized tissue have crystalline structure, X-ray diffraction can be used to analyze the micro/nano-scale structure. The crystal structure in the tissue is an important factor to determine the strength of macroscopic tooth structure. The X-ray strain measurements were conducted on tooth specimens with intact surfaces under loading. Highly accurate measurements of surfaces of teeth were performed by precise positioning of the X-ray irradiation area. This non-destructive method is expected to use in the dental diagnoses.

Research Products

• [Journal Article] Orientation and Deformation of Mineral Crystals in Tooth Surfaces (2012)
  • Author(s): K. Fujisaki、M. Todoh、A. Niida、R. Shibuya、S. Kitami、S. Tadano
  • Journal Title: Journal of the Mechanical Behavior of Biomedical Materials Volume: Vol.10 Pages: 176-182
  • NAID: 120004405559
  • Peer Reviewed
• [Presentation] Orientation and Deformation of Apatite Crystals in Tooth Enamel (2012)
  • Author(s): K. Fujisaki、M. Todoh、S. Tadano
  • Organizer: The First ETH-Japan Workshop on Science and Computing
  • Place of Presentation: Ramadaホテル・エンゲルベルク・スイス
  • Year and Date: 2012-03-14
• [Presentation] Orientation and Deformation of Apatite Crystals in Tooth Enamel (2012)
  • Author(s): Kazuhiro Fujisaki
  • Organizer: he First ETH-Japan Workshop on Science and Computin
  • Place of Presentation: Ramadaホテル、エンゲルベルク、スイス
  • Year and Date: 2012-03-14
• [Presentation] 皮膚組織下のチタンプレートの応力測定 (2011)
  • Author(s): 藤崎和弘、但野茂
  • Organizer: 日本機械学会第23回バイオエンジニアリング講演会
  • Place of Presentation: 熊本大学・熊本
  • Year and Date: 2011-01-09
• [Presentation] 皮膚組織下のチタンプレートの応力測定 (2011)
  • Author(s): 藤崎和弘
  • Organizer: 日本機械学会第23回バイオエンジニアリング講演会
  • Place of Presentation: 熊本大学,熊本
  • Year and Date: 2011-01-09
• [Presentation] X線IPによる皮質骨組織内HAp結晶の3軸ひずみ測定 (2010)
  • Author(s): 藤崎和弘、川島圭太、但野茂
  • Organizer: 第21回バイオフロンティア講演会
  • Place of Presentation: ITビジネスプラザ武蔵・金沢
  • Year and Date: 2010-11-13
• [Presentation] X線IPによる皮質骨組織内HAp結晶の3軸ひずみ測定 (2010)
  • Author(s): 藤崎和弘
  • Organizer: 日本機械学会第21回バイオフロンティア講演会
  • Place of Presentation: ITビジネスプラザ武蔵,金沢
  • Year and Date: 2010-11-13
• [Presentation] エナメル質表面におけるアパタイトの結晶配向と変形特性 (2010)
  • Author(s): 藤崎和弘、東藤正浩、但野茂
  • Organizer: 第18回顎顔面バイオメカニクス学会大会
  • Place of Presentation: 産業振興センター・札幌
  • Year and Date: 2010-09-19
• [Presentation] エナメル質表面におけるアパタイトの結晶配向と変形特性 (2010)
  • Author(s): 藤崎和弘
  • Organizer: 第18回顎顔面バイオメカニクス学会大会
  • Place of Presentation: 産業振興センター,札幌
  • Year and Date: 2010-09-19