牙周科的环境噪音及超声洁牙机操作者听力状况的调查  

Investigation of Hearing of Ultrasonic Scaler Operators and Noise at Department of Periodontics

作　　者：巩丹丹[1,2] 王景洁 李言凤[1] 熊贵忠 谢昊[1] 

机构地区：[1]口腔基础医学省部共建国家重点实验室培育基地.口腔生物医学教育部重点实验室.武汉大学口腔医院,湖北武汉430079 [2]上海市徐汇区大华医院 [3]武汉市第五医院口腔科

出　　处：《口腔医学研究》2013年第6期560-562,共3页Journal of Oral Science Research

摘　　要：目的:探讨超声洁牙机临床使用过程中发出的环境噪音(分贝数)对操作者听力的影响。方法:实验组18名,为直接使用超声波洁牙机两年以上的操作者,包括牙周科医生和洁牙员;对照组1,牙体牙髓科医生13名;对照组2,公务员27名。对58名受试者采用上升法进行纯音气导听力测试,分别测定左右耳500、1000、2000、3000、4000、6000、8000Hz时的气导听阈分贝值。使用HS5670B型积分声级计分别测量距离超声洁牙机工作机头15、20、30cm的分贝数。结果:右耳:实验组较对照组1和对照2在3000、4000、6000Hz时的气导听阈分贝值均有显著差异(P<0.05);左耳:实验组较对照组1和对照2在各检测频率段的气导听阈分贝值均无显著差异。对照组1和对照组2之间在各检测频率段的气导听阈分贝值均无显著差异。超声洁牙机工作时,距离超声洁牙机工作机头15、20、30cm的环境平均声暴露级分别为83、83db和89db。距工作机头近距离(15cm)的声暴露级最大可达到93db。结论:超声洁牙机工作状态时发出的环境噪音对于未采用听力保护措施的操作员右耳高频区听力(3000、4000、6000Hz)产生慢性损害。Objective： To explore the influence of ultrasonic scaler on hearing of operators during clinic use. Meth- ods： Test group includes eighteen subjects （including periodontists and dental hygienists）who operated the ultrason- ic scaler directly for at least two years; Control group one includes thirteen endodontics doctor, control group two includes twenty--seven civil servants. Fifty--eight subjects were conducted pure tone air test. They were measured right and left ear respectively at 500Hz, 1000Hz, 2000Hz, 3000Hz, 4000Hz, 6000Hz, 8000Hz with decibels. U sing HS5670B integrated sound level meter with the distance of 15era, 20cm, 30cm to measure the decibel of ultra- sonic scaler. Results： In right ear there are obvious differences between test group and control group one and control two at 3000Hz, 4000Hz, 6000Hz（P〈0.05）. There are no differences between test group and control group in left ear. There are no differences between control group one and control group two. In working conditions, the average sound exposure level is 83db, 83db and 89db respectively with the distance between ultrasonic scaler tip and sound level meter is 15cm, 20cm, 30cm. The maximum level is 93db when the distance is 15cm. Conclusion： The wave frequency of ultrasonic scaler may have potential damage on the operator＇s right ear who did not have protections es- pecially at high--frequency （3000Hz, 4000Hz, 6000Hz）.

关 键 词：超声波洁牙机 纯音听力测试 牙周科医生 听力损失 

分 类 号：R78[医药卫生—口腔医学]