| Project/Area Number |
15592016
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Conservative dentistry
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| Research Institution | Tohoku University |
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Principal Investigator |
ABE Satoshi Tohoku University, Graduate School of Dentistry, Assistant Professor, 大学院・歯学研究科, 助手 (10222647)
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| Co-Investigator(Kenkyū-buntansha) |
KOMATSU Masashi Tohoku University, Graduate School of Dentistry, Professor, 大学院・歯学研究科, 教授 (10005069)
ENDO Tatsuo Tohoku University, Hospital, Lecturer, 病院・講師 (20168826)
HIRATA Masatsugu Tohoku University, Graduate School of Dentistry, Assistant Professor, 大学院・歯学研究科, 助手 (70312593)
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| Project Period (FY) |
2003 – 2005
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| Project Status |
Completed (Fiscal Year 2005)
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| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2005: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2004: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2003: ¥1,700,000 (Direct Cost: ¥1,700,000)
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| Keywords | hospital infection / sterilization / disinfection / dental care / dental unit / functional water / ICD / ICT / 残留塩素 / 従属栄養細菌 / 酸性電解水 / エイズ / 有効塩基濃度 / 電解槽 / ウイルス肝炎 / 印象 / オートクレーブ / 殺菌 |
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| Research Abstract |
The problem of infection control is worsening among patients and health-care personnel. We have been greatly concerned with disinfection and sterilization of pathogenic microbes. The following results were obtained.
1.The Japanese Association for Infectious Diseases proposed a job description for an infection control doctor (ICD) in 2000. Infection control team (ICT), which consisted of two ICD, five dentists, two nurses, a pharmacist, and an assistant officer, was established at Tohoku University Dental Hospital in 2004. ICT did the rounds twice a month in the hospital. Since that time there have been changes in healthcare delivery, and it is now recognized that infection control needs to be integrated into clinical and corporate governance processes.
2.Silicone impressions were made from a master die. Treatment groups were sterilized by autoclave and immersed in 2% glutaraldehyde. Cast made from impressions immersed in 2% glutaraldehyde are acceptable for use in the construction of inlays. Cast made from impressions sterilized by autoclave can be used for the fabrication of diagnostic casts and some inlays.
3.Functional water, which has bactericidal functions, can be electrolytically generated from saline water in electrolysis chamber. But emissions of chlorine gas reduced the available chlorine concentration as time advances. Therefore, in this study, experimental non-diaphragm-type electrolysis apparatuses were made to research changes of the concentration. The water pH was adjusted 9.0, and consequently the water maintained the high level of the available chlorine concentration.
4.The presence of large numbers of microorganisms in dental unit water poses an increased risk of infection for dental patient and staff. Handpiece and air/water syringe waterline specimens ranged from 1,000 to 1,000,000 CFU/ml. Dentists should perform the best method for maintaining acceptable water quality.
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