SELF-PERCEIVED HEARING LOSS AMONG DENTAL PROFESSIONALS IN A METROPOLITAN CITY AND THE SOUND LEVELS IN DENTAL CLINICS

Abstract

Introduction: Occupational noise exposure in dental offices is a significant concern, potentially leading to noise-induced hearing loss (NIHL) among dental professionals. This study examines sound levels in dental clinics and evaluates the prevalence of self-reported hearing impairment among dental practitioners in Chennai City.

Methods: This two-month cross-sectional study was conducted in two dental institutions and ten private clinics. Noise levels were assessed using a sound level meter, measuring at three different locations within each clinic during peak hours and regular times. A total of 80 dental practitioners with over five years of experience participated in a structured questionnaire survey. The survey explored their awareness and experiences with NIHL. Descriptive statistics were used, and the Fischer exact test was performed, with a significance level set at p < 0.05.

Results: Prosthodontics departments exhibited the highest average sound level (87.9±9.67 dB), while Periodontics had the lowest (78.1±8.63 dB). Dentists who worked over 7 hours daily were likelier to report hearing impairment (63.6%, p=0.02). Those with 5-10 years of practice frequently experienced tinnitus and ear fullness (40%, p=0.038).

Discussion: The study highlights significant occupational noise levels in dental offices, which contribute to hearing impairment among dental professionals. Despite the risks, hearing protection is underutilized. Noise levels often surpass NIOSH's recommended limit, correlating with increased hearing impairment (p<0.014).

Conclusion: Urgent interventions are necessary to reduce noise exposure in dental clinics. Implementing noise control strategies and enhancing awareness among dental professionals are vital steps for improving occupational health in dental settings.