牙科技工所噪音状况调查与分析  

Noise level in dental laboratory practice

作　　者：孙健[1] 姚佳景[1] 谭奕[1] 张富强[1] 

机构地区：[1]上海交通大学医学院附属第九人民医院·口腔医学院口腔修复科,上海市口腔医学重点实验室,上海200011

出　　处：《上海口腔医学》2009年第6期576-579,共4页Shanghai Journal of Stomatology

基　　金：上海市重点(特色)学科建设项目(T0202);上海市科学技术委员会资助项目(08D22271100);上海市大学生创新性实验项目(IAP2099)~~

摘　　要：目的:牙科技工在工作时暴露于噪音环境中,本研究对牙科技工用手机及各种设备所产生的噪音进行了调查分析。方法:采用精密声级计对2种牙科技工用手机(Kavo K9,NSK Vmax)在空转及不同工作状态下所产生的噪音进行检测,测定距离为离手机15cm、30cm、45cm;同时测定牙科技工设备在工作时所产生的噪音,测定位置为技工耳旁及离声源1.5m处。结果:2种牙科技工用手机在不同工作状态及不同测定距离时所产生的噪音在61～83dB之间。牙科技工设备所产生的噪音更高。如高速金属切割机、蒸汽清洁机、石膏风镐机产生的噪音都超过90dB。技工室内工作环境的噪音范围在65～83dB。结论:牙科技工所中产生的噪音对听力损害存在潜在危险,应对牙科技工进行定期的听力检查,并要求牙科技工在工作时佩戴耳塞等听力保护装置。PURPOSE：Dental technicians are exposed to different noises.The aim of this study was to determine the noise level produced by different dental laboratory handpieces and special equipments in one dental lab.METHODS：The noise level produced by two dental laboratory handpieces（Kavo K9,NSK Vmax） was measured at distance of 15cm,30cm and 45cm in free-running and different working conditions.Additionally,the noise level produced by some dental laboratory equipments and procedures were also measured both near the technician＇s ear and 1.5 meters away.The noise level was determined using a precious sound level meter.RESULTS：The mean value of noise level of the two dental laboratory handpieces measured at all distances and in all conditions was between 61 to 83 dB.The noise level produced by some dental laboratory equipments were much higher,with high-speed metal cutting,steam cleaning and power pillo trimmer exceeding 90dB.Noise level inside the denture fabrication room was between 65 to 83 dB.CONCLUSIONS：The noise level in the dental laboratory is considered to be a potential risk causing hearing loss.Regular audiometry checking up should be carried out among the dental technicians and ear protectors must be used during work.

关 键 词：噪音 牙科技工 牙科技工用手机 牙科技工设备 

分 类 号：R134[医药卫生—劳动卫生]