title: An evaluation of the effectiveness of two different insert types of ear protection in preventing TTS in an industrial environment.
abstract: The effectiveness of a V-51R insert hearing protector in preventing daily temporary threshold shifts in one industrial environment where the employees were exposed to an A-weighted energy average noise level of 95.6 dB was investigated. For comparison purposes the E-A-R Plug Insert hearing protector was also evaluated. The results indicated that the employees who wore the V-51R design incurred significant daily shifts in their hearing levels as compared to their initial hearing exam and significantly greater shifts than the employees who wore the E-A-R Plugs. The greater than expected measured shifts in hearing levels over the past six years in the two departments investigated is attributed at least partially to the use of the V-51R design.
mesh_terms: D000328:Adult; D000367:Age Factors; D001299:Audiometry; D004430:Ear Protective Devices; D005069:Evaluation Studies as Topic; D005260:Female; D006311:Hearing Disorders / Q000517:prevention & control*; D006801:Humans; D008297:Male; D009622:Noise; D009784:Occupational Diseases / Q000517:prevention & control*; D011482:Protective Devices; D044469:Racial Groups; D012737:Sex Factors