Detecting flaws inside the bonding interface between dentin and resin composite by using an ultrasonic phased array system

• Project/Area Number: 20791398
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Conservative dentistry
• Research Institution: Nihon University
• Principal Investigator: INAGE Hirohiko Nihon University, 歯学部, 非常勤医員 (30398862)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 音波フェーズトアレイ法 / 接着界面 / 象牙質 / 接着欠陥 / 超音波フェーズトアレイ法 / イメージ画像 / 音響インピーダンス / 超音波測定 / 欠陥

Research Abstract

Ultrasonic imagingis usedin many fields as a non-invasive technique and offers considerable potential in diagnosis as well as serving as a tool for research. The purpose this study was to ultrasonically determine the flaws inside the resin-dentin interface by using a phased array system. From the results, using the phased array method,flaws existing inside the resin-dentin interface could be detected. It was suggested that the phased array system could be used for analyzing qualitatively the status of the resin-dentin interface.

Research Products

• [Journal Article] Influence of power density on setting behavior of light-cured glass-ionomer cements monitored bv ultrasound measurements. (2009)
  • Author(s): Tonegawa M
  • Journal Title: Journal of dentistry 37 Pages: 535-540
  • Peer Reviewed
• [Journal Article] Ultrasonic monitoring of the setting of glass-ionomer luting cements (2008)
  • Author(s): Mori K, Inage H, Kawamoto R, Tonegawa M, Kurokawa H, Tsubota K, Takamizawa T, Miyazaki Ai
  • Journal Title: Eur J Oral Sci 116 Pages: 72-76
  • Peer Reviewed
• [Journal Article] Changes in elastic modulus of adhesive and adhesive-infiltrated dentin during storage in water (2008)
  • Author(s): Yasuda G, Inage H, Kawamoto R, Shimamura Y, Takubo C, Tamura Y, Koga K, Miyazaki M
  • Journal Title: J Oral Sci 50 Pages: 481-486
  • NAID: 130000072809
  • Peer Reviewed
• [Journal Article] Changes in elastic modulus of adhesive and adhesiveinfiltrat ed dentin during storage in water (2008)
  • Author(s): Yasuda G
  • Journal Title: Journal of Oral Science 50 Pages: 481-486
  • Peer Reviewed
• [Journal Article] Ultrasonic monitoring of the setting of glassionmer luting cements (2008)
  • Author(s): Mori K
  • Journal Title: European Journal of Oral Sciences 116 Pages: 72-76
  • Peer Reviewed
• [Presentation] Changes in elastic modulus of adhesive and adhesive-infiltrated dentin during storage in water (2010)
  • Author(s): Yasuda G
  • Organizer: 39^<th> AADR
  • Place of Presentation: Washington DC(USA)
  • Year and Date: 2010-03-04
• [Presentation] 超音波透過法を用いたコア用レジンの重合挙動観察 (2008)
  • Author(s): 安田源沢
  • Organizer: 日本歯科理工学会
  • Place of Presentation: 大阪
  • Year and Date: 2008-09-19