Evaluation method of infectiosity pollution by the air-born bacteria in dentistry clinic.

牙科诊所空气传播细菌传染性污染评价方法

基本信息

批准号：
09672121
负责人：
SUYAMA Yuji
金额：
$ 1.86万
依托单位：
Tokyo Dental College
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

项目摘要

Blood and drill dust from dental plaque microorganisms, teeth, and filling materials can cause environmental polllution in the dental clinic. Currently, as a preventive measure against air pollution from a patient's mouth during dental treatment. Detetion of oral streptococci in the air-borne is used as an index on the presence of aerosol in consequence of the use of tooth preparation with high-speed air turbines. The air-borne bacteria in the dental clinics consisted of Guram-positive cocci(33%), Guram-positive bacilli(37%), Myces(38%). We recognized 30.6% oral-α,γ-haemolytic streptococci according to the growth shown on Mitis-Sali varius agar disk, while 4.5% recognized on blood agar disk. But we could not find oral-α-γ haemolytic streptococci from the airborne bacterium in the denal clinic's waiting room and in the research room. Oral-α-γ haemolytic streptococci using Mitis Salivarius ager showed more efficiency as the index in monitoring droplet infection at dental treatments and pollution of the in-clinic environment, thus considered as an efficient procedure in detection environmental pollution in the dental clinic. With detection of oral-α-γ haemolytic streptococci two hours after tooth-drilling, necessity of monitoring on standing of air-borne bacteria was considered. We tested the eliminating effects by the air-cleaning system (CLEAN PARTITON) with the plaque solution aerosol and the aerosol from drilling a tooth by examing the distriution of floating aerosol in the air turbine's tank when a plaque solution was sprayed and when a human tooth was drilled with a plaque solution.

牙齿斑块微生物，牙齿和填充材料的血液和钻尘可能会在牙科诊所引起环境污染。目前，作为预防措施，可以在牙科治疗期间对患者口腔污染的空气污染。由于使用高速空气涡轮机使用牙齿制备，因此在气培中检测口腔链球菌被用作气溶胶存在的指数。牙科诊所的空气细菌由Guram阳性球菌（33％），Guram阳性杆菌（37％），Myces（38％）组成。根据Mitis-Sali varius琼脂盘的生长，我们认识到30.6％的口腔-α，γ-溶血性链球菌，而在血琼脂盘上识别的4.5％。 But we could not find oral-α-γ haemolytic streptococci from the airborne bacteria in the denal clinic's waiting room and in the research room.使用Mitis Salivarius Ager口服-α-γ溶血性链球菌显示出更大的有效性，作为在牙科处理中监测液滴感染和临界环境污染的指数，因此被认为是牙科临床中检测环境污染的有效程序。牙齿钻孔两个小时后，通过检测口服-α-γ型链球菌，因此考虑了对气培细菌静脉的必要监测。我们通过检查斑块溶液在喷洒斑块溶液以及用斑块溶液钻孔时，通过检查空气涡轮机罐中浮动气溶胶的分布来测试用斑块溶液气溶胶和气溶胶钻孔的消除效果。