Evaluation of noise exposure and acoustic discomfort in a university dental hygiene clinic

Background: The aim of this study was to evaluate the noise exposure of dental hygiene students in a university clinic and assess the degree of perceived acoustic discomfort. Methods: Personal and environmental phonometric measurements were carried out during dental hygiene sessions at the clinic. An anonymous, online questionnaire was also administered to the 57 students to establish the degree of perceived acoustic discomfort. Results: The noise exposure levels measured in the university clinic were below the lower regulatory action values (LAeq = 77.2 dB(A); LCpeak = 112 dB(C)). No differences in sound levels were observed between left and right ears. The questionnaire highlighted that noise exposure during task performance was related to perceived annoyance, with the majority of students believing that noise increased task exertion. Conclusion: Exposure to noise during dental hygiene appointments, although below regulatory values, can be a source of discomfort, aggravating task exertion, interfering with communication, and reducing the ability to concentrate while carrying out dental hygiene procedures