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      Alteraciones auditivas, percepción y conocimientos de estudiantes sobre ruido en una clínica de enseñanza odontológica Translated title: Auditory alterations and student knowledge and perception on noise at a dental teaching clinic

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          Abstract

          RESUMEN Objetivo Identificar alteraciones auditivas en estudiantes de odontología y evaluar el nivel de conocimiento con relación a la pérdida auditiva inducida por ruido. Metodología Estudio transversal, se realizaron encuestas a estudiantes del tercer año curso diurno y cuarto año del curso nocturno de estomatología. Las variables estudiadas: trastornos auditivos y conocimiento sobre PAIR (pérdida auditiva inducida por ruido). Resultados Muestran la presencia de trastornos auditivos en 14,8% de los estudiantes, de los que 7,4% recibieron tratamiento. El 28,4% había realizado exámenes audio métricos. De los estudiantes, 24,6% tenían familiares con problemas de audición; 11,1% enfermedades preexistentes;49,3% necesitan repetición durante una conver-sación;34,4% estaba irritado en el ambiente de clases prácticas y consideraban las piezas de mano de alta rotación el instrumento más ruidoso; el 75,3% refirió usar audífonos y un 72,1% por más de 5 años. En relación a los resultados sobre conocimientos 93,8% afirmaron que el dentista es un profesional con riesgo de pérdida auditiva por ruido, pero el 83,9% no había recibido orientación sobre el PAIR. Respecto al protector auricular 77,7% lo conocía, pero sólo 3,7% lo había usado. Conclusión Los estudiantes de estomatología presentaron alteraciones auditivas inducidas por el ruido, y consideraban el local de las clases prácticas un ambiente ruidoso; es necesario un mayor conocimiento en los alumnos de las consecuencias negativas del ruido en la salud y la utilización de medidas de prevención para evitar la pérdida de la audición a largo plazo.

          Translated abstract

          ABSTRACT Objective To identify auditory alterations in dentistry students and evaluate the level of knowledge in relation to noise-induced hearing loss. Materials and Methods Cross-sectional study. Surveys applied to third-year students of the day school, and fourth-year students of the night stomatology school. The variables studied were auditory disorders and knowledge about NIHL (noise-induced hearing loss). Results Hearing disorders were found in 14.8% of the students, of whom 7.4% were receiving treatment. Audiometric examinations were performed in 28.4% of the students. It was also found that 24.6% of the students had relatives with hearing problems; 11.1% had pre-existing conditions; 49.3% needed repetition during a conversation; 34.4% felt irritated during practical classes and considered high rotation hand pieces to be the noisiest instrument; and 75.3% reported using hearing aids (72.1% for more than 5 years). With regard to knowledge, 93.8% said that dentists are professionals at risk of hearing loss due to noise, but 83.9% had not received guidance on NIHL. Regarding the hearing protector, 77.7% knew about it, but only 3.7% had used it. Conclusion Stomatology students have noise-induced hearing loss, and also considered that the places where practical classes are given are a noisy environment. More knowledge is needed in students about the negative consequences of noise in health and the use of preventive measures to avoid hearing loss in the long term.

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          Associação entre perda auditiva induzida pelo ruído e zumbidos

          O estudo verificou a associação entre perda auditiva induzida por ruído (PAIR) e queixa de zumbido em trabalhadores expostos ao ruído ocupacional. Foram entrevistados e avaliados trabalhadores com histórico de exposição ao ruído ocupacional atendidos em dois ambulatórios de audiologia. Estudou-se a existência de associação entre PAIR e ocorrência de zumbido por intermédio do ajuste de modelo de regressão logística, tendo como variável dependente o zumbido e como variável independente a PAIR, classificada em seis graus, controlada pelas co-variáveis idade e tempo de exposição ao ruído. Os dados foram coletados entre abril e outubro de 2003, na Cidade de Bauru, Estado de São Paulo, Brasil, contemplando 284 trabalhadores. Estimou-se que a prevalência de zumbido aumenta de acordo com a evolução do dano auditivo, controlado para a idade e tempo de exposição ao ruído. Os achados justificam o investimento em programas de conservação auditiva particularmente voltados para o controle da emissão de ruídos na fonte e para a intervenção na evolução das perdas auditivas geradas pela exposição ao ruído visando à manutenção da saúde auditiva e à diminuição dos sintomas associados.
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            Prevalence of Tinnitus and Noise-induced Hearing Loss in Dentists

            Introduction: The purpose of this study was to evaluate noise levels in dental offices and to estimate the risk and prevalence of tinnitus and noise-induced hearing loss (NIHL) in practicing dentists. Materials and Methods: First, measures were collected of sound pressure levels produced by dental handpieces and dental suction in the University of Oklahoma Health Sciences Center (OUHSC) College of Dentistry. Second, a survey was distributed to members of the Oklahoma Dental Association (ODA). Results: Measurements made in the dental operatory revealed dangerous levels when high-volume suction was in use alone and in conjunction with a dental handpiece. Questionnaire results suggested that practicing dentists report sensorineural hearing loss at a rate broadly in line with national averages. However, dentists reported a higher prevalence of tinnitus symptoms than would be expected based on sample demographics. Conclusion: Results from sound level measurements and questionnaire responses indicate that dentists are a population that could be placing their hearing health at risk in a typical daily work environment.
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              Noise Exposure Assessment in a Dental School

              Objectives This cross-sectional study was performed in the Dental School of Prince of Songkla University to ascertain noise exposure of dentists, dental assistants, and laboratory technicians. A noise spectral analysis was taken to illustrate the spectra of dental devices. Methods A noise evaluation was performed to measure the noise level at dental clinics and one dental laboratory from May to December 2010. Noise spectral data of dental devices were taken during dental practices at the dental services clinic and at the dental laboratory. A noise dosimeter was set following the Occupational Safety and Health Administration criteria and then attached to the subjects' collar to record personal noise dose exposure during working periods. Results The peaks of the noise spectrum of dental instruments were at 1,000, 4,000, and 8,000 Hz which depended on the type of instrument. The differences in working areas and job positions had an influence on the level of noise exposure (p < 0.01). Noise measurement in the personal hearing zone found that the laboratory technicians were exposed to the highest impulsive noise levels (137.1 dBC). The dentists and dental assistants who worked at a pedodontic clinic had the highest percent noise dose (4.60 ± 3.59%). In the working areas, the 8-hour time-weighted average of noise levels ranged between 49.7-58.1 dBA while the noisiest working area was the dental laboratory. Conclusion Dental personnel are exposed to noise intensities lower than occupational exposure limits. Therefore, these dental personnel may not experience a noise-induced hearing loss.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rsap
                Revista de Salud Pública
                Rev. salud pública
                Instituto de Salud Publica, Facultad de Medicina - Universidad Nacional de Colombia (Bogotá, DF, Colombia )
                0124-0064
                February 2019
                : 21
                : 1
                : 84-88
                Affiliations
                [1] São Paulo orgnameUniversidade Estadual Paulista orgdiv1Facultad de Odontología de Araçatuba Brazil taniasaliba@ 123456foa.unesp.br
                [4] São Paulo orgname Brasil cgarbin@ 123456foa.unesp.br
                [2] São Paulo orgnameUniversidade Estadual Paulista orgdiv1Facultad de Odontología de Araçatuba Brazil
                [3] São Paulo orgname Brasil agarbin@ 123456foa.unesp.br
                Article
                S0124-00642019000100084 S0124-0064(19)02100100084
                10.15446/rsap.v21n1.75108
                82fa0cc9-477c-49af-ac0f-7be9c1e29c43

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 26 December 2018
                : 24 September 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 25, Pages: 5
                Product

                SciELO Colombia

                Categories
                Artículos/Investigación

                Hearing loss,noise,occupational health,dentists (source: MeSH, NLM),Pérdida auditiva,ruido en el ambiente de trabajo,salud laboral,odontólogos (fuente: DeCS, BIREME)

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