Effect of remineralization of demineralized dentin using bio-glass

• Project/Area Number: 26861588
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Conservative dentistry
• Research Institution: Hokkaido University
• Principal Investigator: Hoshika Shuhei 北海道大学, 歯学研究科, 助教 (40581682)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2016: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2015: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 接着強さ / TEM / グラスアイオノマーセメント / 長期耐久性

Outline of Final Research Achievements

Glass ionomer cement was bonded to human extracted molar. There were two groups. 1: The bonded teeth surfaces were not treated. 2: The bonded teeth surfaces were treated with particular acid. The micro-tensile bond strength was measured after 1 week and 1 year. The interfacial observation using transmission electron microscope was carried out as well. The data until 6 months was published in the academic journal. 0.5-1 micrometer thick demineralized zone was observed in the acid treated group. Thickness of liquid rich layer which is between the demineralized zone and gel-zone might become thinner after 1 year compared with 1 week. There was no significant difference regardless of the usage of acid treatment in bond strength after 1 week and 1 year.

Research Products

• [Journal Article] Effect of Conditioning and Aging on the Bond Strength and Interfacial Morphology of Glass-ionomer Cement Bonded to Dentin. (2015)
  • Author(s): Hoshika S, De Munck J, Sano H, Sidhu SK, Van Meerbeek B
  • Journal Title: journal of adhesive dentistry Volume: 2 Pages: 141-146
  • Peer Reviewed / Open Access / Int'l Joint Research