Noise induced hearing loss in dentistry students
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Keywords
Dentists, noise-induced hearing loss, college students
Abstract
Introduction: Starting with their time at college, dentists are routinely exposed to potentially harmful sounds. Aim: To determine whether the presence of notch in 3, 4 and 6 kHz frequencies is associated with exposure to noise from dental tools. Material and method: A cross-sectional study was performed with a group of students exposed to noise in their dental practices and with another group that was not exposed. Hearing tests were performed with both groups, along with a sound measurement and dosimetry in the dental laboratory. Results: Fifty dental students were exposed to the noise of dental implements and 107 students were not exposed. No significant differences were observed when comparing the thresholds of both groups. However, the frequency of notch at 4 kHz, as at 6 kHz in the left ear, was significantly higher in the exposed group. Conclusion: Noise exposure derived from dental practices is associated with notch at high frequencies. However, the vast majority of the subjects showed no evidence of a threshold higher than the limit that is considered normal.
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