Department of Periodontics, KLE Society's Institute of Dental Sciences, Bangalore, India.
Department of Periodontics, MS Ramaiah Dental College, Bangalore, India.
J Infect Public Health. 2015 May-Jun;8(3):260-5. doi: 10.1016/j.jiph.2014.11.004. Epub 2015 Jan 3.
Routine dental procedures produce aerosol and splatter, which pose a potential risk to the clinician and dental personnel, as well as the immunocompromised patient. Reports indicate that the ultrasonic scaler is the greatest producer of aerosol and splatter.
The study aimed to evaluate the contamination distance, contamination amount and contamination duration of aerosol produced during ultrasonic scaling.
The study was performed on a mannequin fitted with phantom jaws on a dental chair. Mock scaling was done for 15 min using an auto-tuned magnetostrictive ultrasonic scaler with the simultaneous use of a low volume saliva ejector. An ultrafiltrate-containing fluorescent dye was used in the reservoir supplying the scaler unit. Filter paper discs were placed in different positions and distances in the operatory. Immediately following scaling, the filter paper discs were replaced with new ones. This was done every 30 min for a total duration of 90 min.
Maximum contamination was found on the right arm of the operator and left arm of the assistant. Contamination was also found on the head, chest and inner surface of the face mask of the operator and of the assistant. The aerosol was found to remain in the air up to 30 min after scaling.
The occupational health hazards of dental aerosols can be minimized by following simple, inexpensive precautions.
常规牙科操作会产生气溶胶和飞沫，这对临床医生和牙科人员以及免疫功能低下的患者构成潜在风险。有报道称，超声洁牙机会产生最多的气溶胶和飞沫。
本研究旨在评估超声洁牙时产生的气溶胶的污染距离、污染量和污染持续时间。
本研究在牙科椅上配备了假颚的人体模型上进行。使用自动调谐磁致伸缩超声洁牙机进行了 15 分钟的模拟洁牙操作，同时使用了低容量唾液抽吸器。在供应洁牙机单元的储液器中使用了含有超滤液的荧光染料。将滤纸盘放置在操作室内的不同位置和距离处。洁牙后立即用新的滤纸盘替换。这每 30 分钟进行一次，总共持续 90 分钟。
操作人员的右臂和助手的左臂发现了最大的污染。操作人员和助手的头部、胸部和面罩的内表面也发现了污染。在洁牙后 30 分钟内，气溶胶仍留在空气中。
通过采取简单、廉价的预防措施，可以将牙科气溶胶的职业健康危害降到最低。
