| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
An inhibitory effect of 0.2% chlorhexidine treatment against the oral biofilm which was irrigated with a pulsating jet stream of water (350 kPa) was evaluated by measuring thickness of biofilm using an Electron Probe Micro-Analyzer (EPMA). However, the combined effect of the chlorhexidine treatment and the water irrigation could not be detected.
The influence of factors (such as tip form, brush tension and slurry viscosity) transmitting brushing force onto eroded dentine surface was evaluated by measuring thickness of substance loss using an EPMA. Eroded dentine wear by a sonic toothbrush was deeper with tapered tip than with flat trim.
Oral biofilm uptake of mineral ions (Al, B, F, Sr) released from experimental toothpaste containing surface pre-reacted glass-ionomer (S-PRG) filler was estimated by depth-specific analysis. The biofilm showed significant uptake of only F and Sr.
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