Studies on Prevention of Contamination of Portable Dental Treatment Unit
| Project/Area Number |
10557176
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Conservative dentistry
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| Research Institution | Osaka University |
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Principal Investigator |
YASUNAGA Tetsuya Faculty of Dentistry, Osaka University, Research Associate, 歯学部, 助手 (70182342)
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| Co-Investigator(Kenkyū-buntansha) |
IMAZATO Satoshi Faculty of Dentistry, Osaka University, Associate Professor, 歯学部, 助教授 (80243244)
TAKESHIGE Fumio Faculty of Dentistry, Osaka University, Assistant Professor, 歯学部・附属病院, 講師 (60206969)
EBISU Shigeyuki Faculty of Dentistry, Osaka University, Professor, 歯学部, 教授 (50116000)
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| Project Period (FY) |
1998 – 1999
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| Project Status |
Completed (Fiscal Year 1999)
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| Budget Amount *help |
¥10,000,000 (Direct Cost: ¥10,000,000)
Fiscal Year 1999: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1998: ¥7,300,000 (Direct Cost: ¥7,300,000)
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| Keywords | Infection control / Cross contamination / Air-turbine / Portable Dental Treatment Unit / Handpiece / Micromotor / 3 way-syringe / Soft Oxidation Potential Water / スリーウェイシリング |
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| Research Abstract |
In recent years there have been a notable increase in the demand of home dental treatment due to the increasing number of elderly who cannot visit dental offices. Greater efforts should be made to reduce the risk of contamination for such patients. However, portable dental treatment units have no anti-contamination device. We attempted to use the Soft Oxidation Potential Water (SOPW) as a coolant in order to prevent the contamination of a portable dental treatment unit. The aims of this in vitro study were to investigate the contamination of portable dental treatment unit, and to estimate the efficacy of application of SOPW. The air-turbine handpiece was contaminated by operating 3 cycles, each being 10 seconds drive and 5 seconds stop, on Steptococcus mutans MT6R suspension (1×10ィイD18ィエD1CFU/ml). Then the outer surface of the handpiece was carefully wiped with 80% ethanol gauze. The contaminated bacteria in the handpiece were collected in 10 ml of saline, and the number of viable cells was measured by a standard spred-plate technique. Without application of SOPW as a coolant, the handpiece was contaminated with S. mutans MT6R (3.17×10ィイD15ィエD1CFU). On the other hand, no bacterial contamination in the handpiece was detected when SOPW was used. It was suggested that SOPW had a potential to prevent contamination of portable dental treatment units.
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Report
(3 results)
Research Products
(5 results)
