| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
We developed a fabrication method of new dental material of apatite sheet that prevents tooth decay. Using the pulsed laser deposition, top side of the sheet was made of crystalized fluoroapatite (F-Ap) to prevent from tooth decay, and the bottom side of the sheet was made of amorphous hydroxyapatite (H-Ap) to be able to bond itself with the tooth surface. Degree of crystallization and density of the F and OH was gradually varied from the top to the bottom through the film. X-ray diffraction showed that a single layer of the F-Ap film was crystallized with c-axis orientation perpendicular to the film surface. Fourier-transform infrared spectroscopy indicated that the single F-Ap film was pure Ca10(PO4)6F2 without OH group. The F-Ap film showed an acid resistance lower than pH of 5.
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