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Studies on Prevention of Contamination of Portable Dental Treatment Unit

便携式牙科治疗机污染防治研究

基本信息

批准号：
10557176
负责人：
YASUNAGA Tetsuya
金额：
$ 6.4万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10557176/
关键词：
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

项目摘要

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.

近年来，由于越来越多的老年人不能到牙科诊所就诊，家庭牙科治疗的需求显着增加。应作出更大努力，降低这类患者受到污染的风险。然而，便携式牙科治疗设备没有防污染装置。我们尝试使用软氧化电位水(SOPW)作为冷却剂，以防止便携式牙科治疗装置的污染。本次体外研究的目的是调查便携式牙科治疗机的污染情况，并评价SOPW的应用效果。空气涡轮手机在变形链球菌MT6R悬液(1×10ィイD18ィエD1CFU/ml)上运行3个循环，每次行驶10s，停止5s，造成污染。然后用80%乙醇纱布仔细擦拭手机外表面。将手机中被污染的细菌收集在10毫升的生理盐水中，并用标准的快速培养板技术测量活细胞数量。在不使用SOPW作为冷却液的情况下，手机被变形链球菌MT6R(3.17×10ィイD15ィエD1CFU)污染。另一方面，使用SOPW时，手机中没有检测到细菌污染。有人认为，SOPW有可能防止便携式牙科治疗装置的污染。