Nondestructive Analysis of Tooth - Adhesive Interfaces by Surface Sensitive XAFS.
| Project/Area Number |
24890061
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Dental engineering/Regenerative dentistry
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
WADA Takahiro 東京医科歯科大学, 医歯(薬)学総合研究科, 助教 (10632317)
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| Project Period (FY) |
2012-08-31 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 歯科材料 / XAFS / 表面・界面分析 / X線光電子分光 / 歯学 / 生体材料 / 歯科理工学 / 表面分析 / X線吸収微細構造 |
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| Research Abstract |
Dental adhesives are used to bond the dental materials to teeth. To obtain high durability and adhesive strength, informations about the tooth (enamel/dentin) - adhesive interface are extremely important. However, conventional analysis methods have some limitations, such as destructive. X-ray absorption fine structure (XAFS), which is one of spectroscopic methods, makes possible to estimate the various properties (electronic state, peripheral atoms, coordination numbers and the bond distance) of a particular atom in the substance. In this study, we analyze the chemical state of Ca in hydroxyapatite (HAp)-10-methacryloyloxydecyl dihydrogen phosphate (MDP) mixture. MDP is widely used as an adhesive monomer.Surface sensitive XAFS techniques are applied for the HAp/MDP interface analysis. As results, we found that HAp - 10-MDP interface is thin MDP-Ca layer ( < 100 nm), and its depth of layer is depend on treatment condition (the ratio of HAp and MDP solution and the treatment period).
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Report
(3 results)
Research Products
(6 results)
