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近年来，随着超声波洁牙机的逐渐普及和使用，其对诊室环境污染的问题也越来越引起人们的重视。众所周知，超声波洁牙时冷却水喷雾可携带细菌喷出口腔，使诊室的环境受到污染，直接危害患者及医护人员的健康。为寻找减少诊室空气污染的方法，作者将需行超声波洁治的患者在洁治
In recent years, with the gradual popularization and use of ultrasonic scaler, the problem of environmental pollution in the clinic has drawn more and more attention. As we all know, ultrasonic cleaning of dental water spray can carry bacteria spit out the mouth, so that the office environment was contaminated, directly endanger the health of patients and health care workers. To find ways to reduce the air pollution in the office, the author will need to perform ultrasonography in patients treated with SJ