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

牙菌斑微生物、牙齿和填充材料中的血液和钻探粉尘会在牙科诊所造成环境污染。目前，作为预防牙科治疗过程中患者口腔空气污染的措施。空气中口腔链球菌的检测是由于使用高速空气涡轮机进行牙齿准备而导致的气雾剂存在的一个指标。口腔门诊空气细菌以革兰氏阳性球菌(33%)、革兰氏阳性杆菌(37%)、霉菌(38%)为主。根据Mitis-Sali varus琼脂纸片上显示的生长情况，我们识别了30.6%的口服α，γ溶血性链球菌，而在血液琼脂纸片上识别出了4.5%。但是，在德纳尔诊所的候诊室和研究室，我们都没有从空气传播的细菌中发现口腔α-γ溶血性链球菌。口腔α-γ溶血性链球菌作为监测牙科治疗中飞沫感染和门诊环境污染的有效指标，被认为是检测牙科诊所环境污染的有效方法。通过对牙钻后2小时口腔α-γ溶血性链球菌的检测，认为有必要对空气中的细菌进行监测。通过检测喷洒菌斑溶液和牙菌斑溶液钻人牙时空气透平水箱内悬浮气溶胶的分布，测试了空气净化系统(清洁颗粒)中菌斑溶液气溶胶和牙菌斑溶液钻牙气溶胶的净化效果。

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.