The Investigation of Stress Distribution in Root Restored with Different Crown Materials

• Project/Area Number: 18791426
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: 補綴理工系歯学
• Research Institution: Tokyo Medical and Dental University
• Principal Investigator: OKADA Daizou Tokyo Medical and Dental University, 大学院医歯学総合研究科, 助教 (80323690)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,720,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥120,000); Fiscal Year 2008: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2007: ¥1,000,000 (Direct Cost: ¥1,000,000); Fiscal Year 2006: ¥2,200,000 (Direct Cost: ¥2,200,000)
• Keywords: 歯根破折 / 応力 / 歪み / 有限要素法 / 歪みゲージ / セメント / 支台築造 / 有限要素 / クラウン

Research Abstract

歯髄を失った歯は時に歯根破折を生じ、場合によっては抜歯に至ることがある。歯根破折には、縦破折と水平破折の2種類がありいずれの場合も憂慮すべきことである。本研究では主に水平破折に主眼をおき、破折部位の応力集中状態を有限要素法および抜去歯を用いた模型実験で調べた。その結果,歯の土台(支台築造)の材料、クラウンの材料およびセメントの物性が応力集中状態に大きな影響を及ぼすことが明らかとなった。

Research Products

• [Journal Article] The Investigation of Distortions around the Cervical Area of Teeth Restored with Two Kinds of Crown Materials (2009)
  • Author(s): Suzuki C, Miura H, Okada D, et al.(計7名)
  • Journal Title: Dent Mater J 28(2) Pages: 142-152
  • NAID: 10025915013
  • Peer Reviewed
• [Journal Article] Photoelastic stress analysis of different post and core restoration methods (2009)
  • Author(s): Masahiro YAMAMOTO, Hiroyuki MIURA, Daizo OKADA et al.(計5名)
  • Journal Title: Dent Mater J 28(2) Pages: 204-211
  • NAID: 10025915207
  • Peer Reviewed
• [Journal Article] Photoelastic stress analysis in different types of post and core (2009)
  • Author(s): Masahiro Yamamoto, Hiroyuki Miura, Daizo Okada, Wataru Komada, David Masuoka
  • Journal Title: Dental Materials Journal 28 Pages: 204-211
  • Peer Reviewed
• [Journal Article] The Investigation of Distortions around the Cervical Area of Teeth Restored with Two Kinds of Crown Materials (2009)
  • Author(s): Chikako SUZUKI, Hiroyuki IWURA, Daizo OKADA, Wataru KOMAD-A, Munenaga MIYASAKA, Masahiro YAMAMOTO, David MASUOKA
  • Journal Title: Dental Materials Journal 28 Pages: 142-152
  • NAID: 10025915013
  • Peer Reviewed
• [Journal Article] K: Stress Distribution in Root Restored with Different Kinds of Post Systems with Composite Resin (2008)
  • Author(s): Okada D, Miura H, Suzuki C, et al.(計7名)
  • Journal Title: Dent Mater J 27 Pages: 605-611
  • Peer Reviewed
• [Journal Article] Investigation of Stress Distribution in Roots Restored with Different Crown Materials and Luting Agents (2008)
  • Author(s): Suzuki C, Miura H, Okada D, et al.(計4名)
  • Journal Title: Dent Mater J 27(2) Pages: 229-236
  • NAID: 110006649453
  • Peer Reviewed
• [Journal Article] Stress Distribution in Root Restored with Different Kinds of Post Systems with Composite Resin (2008)
  • Author(s): Okada D, Miura H, Suzuki C, Komada W, Shin C Yamamoto M, Masuoka D
  • Journal Title: Dental Materials Journal 27 Pages: 605-611
  • Peer Reviewed
• [Journal Article] Investigation of Stress Distribution in Roots Restored with Different Crown Materials and Luting Agents (2008)
  • Author(s): Suzuki C, Miura H, Okada D, Komada
  • Journal Title: Dental Materials Journal 27 Pages: 229-236
  • NAID: 110006649453
  • Peer Reviewed
• [Presentation] Stress Distribution in Root with Different Post and core Systems (2008)
  • Author(s): Okada D, Miura H, Suzuki C, et al.
  • Organizer: 86th General Session & Exhibition of the IADR
  • Place of Presentation: Toronto, Canada
  • Year and Date: 2008-07-03
• [Presentation] Comparison of six different fiber reinforced composite FPD framework designs (2008)
  • Author(s): Masuoka D, Miura H, Yamamoto M, Okada D
  • Organizer: 86th General Session & Exhibition of the IADR
  • Place of Presentation: Toronto, Canada
  • Year and Date: 2008-07-03
• [Presentation] Stress Distribution in Root with Different Post and core Systms (2008)
  • Author(s): Okada D, Miura H, Suzuki C, Komada W, Yamamoto M, Masuoka D, Shin C
  • Organizer: International Association for Dental Research
  • Place of Presentation: Toronto, Canada
  • Year and Date: 2008-07-03
• [Presentation] 種々の支台築造に生じる応力の光弾性的解析 (2008)
  • Author(s): 武井秀典,三浦宏之,山本将弘,岡田大蔵ほか
  • Organizer: 日本補綴歯科学会第117回学術大会
  • Place of Presentation: 名古屋
• [Presentation] 咀嚼時における種々の支台築造歯の応力分布に関する研究 (2008)
  • Author(s): 岡田大蔵,三浦宏之,駒田亘ほか
  • Organizer: 日本補綴歯科学会第117回学術大会
  • Place of Presentation: 名古屋
• [Presentation] 咀嚼時における種々の支台築造歯の応力分布に関する研究 (2008)
  • Author(s): 岡田大蔵, 三浦宏之, 駒田亘, 進千春, 鈴木智香子, 山本将弘
  • Organizer: 日本補綴歯科学会
  • Place of Presentation: 名古屋
• [Presentation] 種々の支台築造に生じる応力の光弾性的解析 (2008)
  • Author(s): 武井秀典, 三浦宏之, 山本将弘, 岡田大蔵, 駒田亘, 遊佐耕一郎
  • Organizer: 日本補綴歯科学会
  • Place of Presentation: 名古屋
• [Presentation] Photoelastic Stress Analysis in Different Types of Post and Core (2007)
  • Author(s): Yamamoto M, Miura H, Okada D, et al.
  • Organizer: 85 th General Session of the IADR
  • Place of Presentation: New Orleans, Louisiana
  • Year and Date: 2007-03-23
• [Presentation] 歯冠補綴物装歯の歯頸部における歪みに関する研究 (2006)
  • Author(s): 鈴木智香子,三浦宏之,岡田大蔵ほか
  • Organizer: 日本補綴歯科学会東京支部第10回学術大会
  • Place of Presentation: 東京
  • Year and Date: 2006-11-11
• [Presentation] Comparison of Shrinkage Stress in Composite Resin Post-core Build-up Methods (2006)
  • Author(s): Yamamoto M, Miura H, Okada D, et al.
  • Organizer: 84 th General Session of the IADR
  • Place of Presentation: Brisbane, Australia
  • Year and Date: 2006-06-29
• [Presentation] Photoelastic Stress Analysis in Different FRC FPD Framework Designs (2006)
  • Author(s): Masuoka D, Miura H, Okada D, et al.
  • Organizer: 84 th General Session of the IADR
  • Place of Presentation: Brisbane, Australia
  • Year and Date: 2006-06-29
• [Presentation] Stress Distribution in Root Restored with Different Post Systems (2006)
  • Author(s): Okada D, Miura H, Suzuki C, et al.
  • Organizer: 84th General Session of the IADR
  • Place of Presentation: Brisbane, Australia
  • Year and Date: 2006-06-28