| Project/Area Number |
24659927
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Periodontal dentistry
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| Research Institution | Showa University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
YAMAMOTO Matsuo 昭和大学, 歯学部, 教授 (50332896)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | バイオフィルム / チタン / 加速度 / 超音波 |
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| Research Abstract |
In this study, we examined the debriding effect of the action of vibrational acceleration on the plaque biofilm attached to titanium surface. Plaque biofilm were formed on titanium specimens by volunteers who kept the custom made stents intraorally for 72 hours on the buccal surfaces of molar and premolar teeth. The titanium surface was exposed to ultrasonic water flow for 180 seconds. For each titanium specimen, residual plaque biofilm (RPB) areas were evaluated as a percentage of the scanned surface selected at random by digital microscope. Ultrasonic water exposed titanium surfaces were observed by scanning electron microscope (SEM).
Mean RPB was 19.0% and 16.2% on the mirror and rough surface respectively. A significant decrease in the RPB when compared to pretreatment on both mirror surface and rough surface *p<0.01, Tukey-Kramer (n=8). Additionally, the ultrasonic water flow resulted in complete disruption of the bacterial chain.
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