Survey of dentistry noise exposure in different parts of the great centers of Dentistry, Tehran

One of the important consequences of the Industrial Revolution, increasing the intensity level of workplace noise. Aim of this paper to explain the role and importance of the noise level in the dental workplace, to has been Evaluate of dentistry noise exposure, dental unit hand piece noise level and the different part equipment of the great centers of Dentistry, Tehran.
In this cross - sectional study, Sound pressure level(SPL) were measured using B&K noisemeter models 2237 in the hearing zone of dentists at restoration parts, diagnostics, pediatrics, periodontics, oral surgery, endodontics and the CSR parts. The average sound pressure level means were measurement using the ISO 3744 standard.
Findings: The results show that the highest levels of sound pressure level (dB) among all studied parts were pediatric Ángel hand piece that was obtained 86 dB. Comparison of sound pressure level (LPT) showed the Maximum amount belonging to ultrasonic devices that was obtained 96.8dB.
The results of this study showed that the average noise level is high and as an important risk factor for hearing loss in exposed personals. In order to avoid problems caused by noise, such as hearing loss and use of suitable PPE is required accurate performance of hearing conservation program.