期刊
DENTAL MATERIALS JOURNAL
卷 34, 期 2, 页码 270-279出版社
JAPANESE SOC DENTAL MATERIALS DEVICES
DOI: 10.4012/dmj.2014-260
关键词
One-step adhesive; Decalcification; MDP-Ca salt; P-31 NMR; X-ray diffraction
资金
- Ministry of Education, Culture, Sports, Science and Technology in Japan [25462969]
- Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo
- Grants-in-Aid for Scientific Research [25462969] Funding Source: KAKEN
Enamel and dentin particles were added to an experimental 10-methacryloyloxydecyl dihydrogen phosphate (MDP)-based one-step adhesive to react for 30 s. After enamel and dentin reactants were analyzed using X-ray diffraction (XRD) and phosphorus-31 nuclear magnetic resonance (P-31 NMR) techniques, curve-fitting analysis was performed on the P-31 NMR spectra of enamel and dentin reactants. By varying the molar ratio of calcium chloride to MDP, a series of three types of MDP-Ca salts were synthesized. The molecular species of calcium salts of MDP (MDP-Ca salts) produced by decalcification of enamel or dentin were determined based on the XRD and P-31 NMR analysis results of these three types of synthesized MDP-Ca salts. Curve-fitting analysis showed that enamel and dentin developed several types of MDP-Ca salts and amorphous dicalcium phosphate dihydrate (DCPD) during decalcification. The molecular species of MDP-Ca salts produced by enamel and dentin were mono-calcium salts of MDP monomer and MDP dimer. In addition, dentin produced a di-calcium of MDP dimer.
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