| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
In this study we have developed a new cleaning system in which high-frequency ultrasonicis superposed on a water flow from the nozzle. As a result, we successfully downsized the transducer in the frequency band around 350 kHz, and the sound pressure increased with the applied voltage dependent. The effect of removal of biofilm was about 17% at 10 W. There was a negative correlation between applied power and residual biofilm. In addition, titanium surface was not damaged and the main component was TI 96%, when observation with EDX. There was no acute response of inflammation such as edema in miniature swine oral tissues.
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