Analysis of the microstructure and viscoelasticity of the dentin

• Project/Area Number: 21791916
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Prosthetic dentistry
• Research Institution: Ohu University
• Principal Investigator: USAMI Akinobu Ohu University, 歯学部, 助教 (30405964)
• Project Period (FY): 2009 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 象牙質 / 異方性 / 粘弾性

Research Abstract

Dentin that is a major component of tooth has the dentin tubules as its microstructure. The aim of this study was to evaluate the relationship between orientation of the dentin tubules and mechanical strength of the dentin. Orientation of the dentin tubules was analyzed using a scanning electro microscope and coefficient of elasticity and coefficient of viscosity were measured using a creep meter. The mechanical analysis showed that elasticity was larger in parallel than in perpendicular to the direction of the dentin tubules.

Research Products

• [Journal Article] Comparative study of longitudinal changes in peri-implant bone microstructure. (2010)
  • Author(s): SUZUKI Yusuke, MATSUNAGA Satoru, USAMI Akinobu, ABE Shinichi, IDE Yoshinobu
  • Journal Title: J.Jpn.Soc.Oral.Implant. 23(3) Pages: 450-459
  • NAID: 10027680250
  • Peer Reviewed
• [Journal Article] Comparative study of longitudinal changes in peri-implant bone microstructure. (2010)
  • Author(s): Suzuki Y, Matsunaga S, Usami A, Abe S, Ide Y.
  • Journal Title: J.Jpn.Soc.Oral.Implant Volume: Vol.23 Pages: 450-459
  • NAID: 10027680250
  • Peer Reviewed
• [Presentation] Relation between the orientation of the dentin tubules and mechanical strength of the dentin. (2011)
  • Author(s): Akinobu Usami, Hiroshi Saito, Reiki Sukekawa, Naomi Fukai
  • Organizer: The 116^<th> Annual Meeting of the Japanese Association of Anatomists.
  • Place of Presentation: (東北地方太平洋沖地震のため誌上開催)
  • Year and Date: 2011-03-28
• [Presentation] Relation between the orientation of the dentin tubules and the mechanical strength of the dentin. (2011)
  • Author(s): Akinobu Usami, Hiroshi Saito, Reiki Sukekawa, Naomi Fukai
  • Organizer: The 116^<th> Annual Meeting of the Japanese Association of Anatomists
  • Place of Presentation: 東北地方太平洋沖地震のため誌上開催
• [Presentation] 象牙細管の走行と機械的特性の関連 (2010)
  • Author(s): 宇佐美晶信, 斉藤博, 祐川励起, 深井直実
  • Organizer: 第52回歯科基礎医学会・総会
  • Place of Presentation: 東京
  • Year and Date: 2010-09-22
• [Presentation] 象牙細管の走行と機械的特性の関連 (2010)
  • Author(s): 宇佐美晶信、斉藤博、祐川励起、深井直実
  • Organizer: 第52回歯科基礎医学会・総会
  • Place of Presentation: タワーホール船堀(東京)
  • Year and Date: 2010-09-22
• [Presentation] ウシ下顎中切歯象牙細管のSEMによる観察検討 (2010)
  • Author(s): 宇佐美晶信, 斉藤博, 祐川励起, 深井直実
  • Organizer: 第115回日本解剖学会総会・学術大会
  • Place of Presentation: 盛岡
  • Year and Date: 2010-03-30
• [Presentation] ウシ下顎中切歯象牙細管のSEMによる観察検討 (2010)
  • Author(s): 宇佐美晶信
  • Organizer: 第115回日本解剖学会総会・学術集会
  • Place of Presentation: 岩手県民会館(盛岡)
  • Year and Date: 2010-03-30