2015 Fiscal Year Final Research Report
Functional monomer impurity affects adhesive performance
| Project/Area Number |
26893156
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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 |
Prosthodontics/ Dental materials science and
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| Research Institution | Okayama University |
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Principal Investigator |
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| Project Period (FY) |
2014-08-29 – 2016-03-31
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| Keywords | 機能性モノマー / ハイドロキシアパタイト / 象牙質 / 接着 / 化学的相互作用 / ボンディング |
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| Outline of Final Research Achievements |
The functional monomer 10-MDP has been considered one of best performing functional monomers. Different adhesives containing 10-MDP are commercially available, among which many so-called ‘universal’ adhesives that are to be used either following an etch-and-rinse or self-etch application technique. We hypothesize that the quality of the functional monomer 10-MDP in terms of purity may affect the bonding performance. We therefore characterized three different 10-MDP versions using NMR, and analyzed their ability to form 10-MDP_Ca salts using XRD. The bonding ability was tested by micro-tensile bond strength test. The interface between 10-MDP and dentin was observed by transmission electron microscopy. It was concluded that primer impurities and the presence of 10-MDP dimer affected not only hybridization, but also reduced the formation of 10-MDP_Ca salts and nano-layering. 10-MDP in a high purity grade is essential to achieve durable bonding to dentin.
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| Free Research Field |
歯科補綴学, 保存修復学
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