Open Access
Int Arch Otorhinolaryngol 2015; 19(02): 156-160
DOI: 10.1055/s-0034-1390138
Original Research
Thieme Publicações Ltda Rio de Janeiro, Brazil

Characterization of Hearing Thresholds from 500 to 16,000 Hz in Dentists: A Comparative Study

Autor*innen

  • Claudia Giglio de Oliveira Gonçalves

    1   Post-Graduation Program in Communication Disorders, Universidade Tuiuti do Paraná, Curitiba, Paraná, Brazil
  • Luciana Santos

    1   Post-Graduation Program in Communication Disorders, Universidade Tuiuti do Paraná, Curitiba, Paraná, Brazil
  • Diolen Lobato

    1   Post-Graduation Program in Communication Disorders, Universidade Tuiuti do Paraná, Curitiba, Paraná, Brazil
  • Angela Ribas

    1   Post-Graduation Program in Communication Disorders, Universidade Tuiuti do Paraná, Curitiba, Paraná, Brazil
  • Adriana Bender Moreira Lacerda

    1   Post-Graduation Program in Communication Disorders, Universidade Tuiuti do Paraná, Curitiba, Paraná, Brazil
  • Jair Marques

    1   Post-Graduation Program in Communication Disorders, Universidade Tuiuti do Paraná, Curitiba, Paraná, Brazil
    2   Department of Audiology, Universidade Tuiuti do Paraná, Curitiba, Brazil
Weitere Informationen

Publikationsverlauf

01. April 2014

23. Juli 2014

Publikationsdatum:
28. November 2014 (online)

Abstract

Introduction High-level noise exposure in dentists' workplaces may cause damages to the auditory systems. High-frequency audiometry is an important tool in the investigation in the early diagnosis of hearing loss.

Objectives To analyze the auditory thresholds at frequencies from 500 to 16,000 Hz of dentists in the city of Curitiba.

Methods This historic cohort study retrospectively tested hearing thresholds from 500 to 16,000 Hz with a group of dentists from Curitiba, in the state of Paraná, Brazil. Eighty subjects participated in the study, separated into a dentist group and a control group, with the same age range and gender across groups but with no history of occupational exposure to high levels of sound pressure in the control group. Subjects were tested with conventional audiometry and high-frequency audiometry and answered a questionnaire about exposure to noise.

Results Results showed that 81% of dentists did not receive any information regarding noise at university; 6 (15%) dentists had sensorineural hearing impairment; significant differences were observed between the groups only at frequencies of 500 Hz and 1,000, 6,000 and 8,000 Hz in the right ear. There was no significant difference between the groups after analysis of mean hearing thresholds of high frequencies with the average hearing thresholds in conventional frequencies; subjects who had been working as dentists for longer than 10 years had worse tonal hearing thresholds at high frequencies.

Conclusions In this study, we observed that dentists are at risk for the development of sensorineural hearing loss especially after 10 years of service.