Noise level of dental handpieces and laboratory engines

Bahannan, Salma A.; El-Hamid, Ahmed Abd.; Bahnassy, Ahmed A

doi:10.1016/0022-3913(93)90222-a

Cited by 39 publications

(48 citation statements)

References 10 publications

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“…when compared to non-cutting equipments showed that noise generated during cutting activities were significantly higher to those when only turned on. Similar findings were observed from another study [14]. This may be attributed to the friction between the cutting material and cutting tools [25].…”

Section: Discussionsupporting

confidence: 89%

“…The sources of dental sounds that can pose as a potential hazard to hearing system of dentists and patients include high-speed turbine hand pieces, low-speed hand pieces, high-velocity suction, ultrasonic instruments and cleaners, vibrators, mixing devices such as amalgamators and model trimmers [4][5][6][7][8][9][10][11][12][13]. Occupational Safety and Health Administration (OSHA) has reported the daily permissible noise level of 85 decibels for 8 hours of continual exposure [14].…”

Section: Introductionmentioning

confidence: 99%

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Acoustic Noise Levels of Dental Equipments and Its Association with Fear and Annoyance Levels Among Patients Attending Different Dental Clinic Setups in Jaipur, India

Yousuf

Ganta

Nagaraj

et al. 2014

JCDR

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Background: Noise is a source of pervasive occupational hazard for practicing dentists and the patients. The sources of dental sounds by various dental equipments can pose as a potential hazard to hearing system and add to the annoyance levels of the patients. The aim of the study was to analyze the noise levels from various equipments and evaluate the effect of acoustic noise stimulus on dental fear and annoyance levels among patients attending different dental clinic setups in Jaipur, India.

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Acoustic Noise Levels of Dental Equipments and Its Association with Fear and Annoyance Levels Among Patients Attending Different Dental Clinic Setups in Jaipur, India

Yousuf

Ganta

Nagaraj

et al. 2014

JCDR

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“…The National Institute for Occupational Safety and Health (NIOSH) has identified noise as one of the ten leading causes of work related diseases or injuries. Noise can cause masking of unwanted sounds, interference with speech and communication, pain and injury, and temporary and permanent hearing loss (2). Prolonged exposure to noise can lead to noise-induced hearing loss (NIHL) and it may be undetected for years since it is estimated that individuals lose about 28 % of hearing before becoming aware of the problem (3).…”

Section: Introductionmentioning

confidence: 99%

Noise levels in a dental teaching institute - A matter of concern

Singh¹,

Gambhir²,

Singh³

et al. 2012

J Clin Exp Dent

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Objective: To measure and assess the noise levels produced by various dental equipments in different areas of a dental institution and to recommend improvements if noise levels are not within permissible limits. Material and Methods: Sound levels were measured at three different areas of a dental institution where learning and teaching activities are organized. The sound level was measured using a sound level meter known as ‘decibulolmeter’. In each area the noise level was assessed at two positions-one, at 6 inches from the operators ear and second, at the chairside instrument trolley. Noise levels were also assessed from a central location of the clinic area when multiple equipments were in operation simultaneously. Results: Dental laboratory machine, dental hand-piece, ultrasonic scalers, amalgamators, high speed evacuation, and other items produce noise at different sound levels which is appreciable. The noise levels generated varied between 72.6 dB in pre-clinics and 87.2 dB in prosthesis laboratory. The results are comparable to the results of other studies which are conducted elsewhere. Although the risk to the dentists is lesser, but damage to the hearing is possible over prolonged periods. Conclusion: Higher noise levels are potentially hazardous to the persons working in such environments especially in the laboratory areas where noise levels are exceeding the permissible limits. Key words:Noise level, equipment, hearing loss, risk, working areas.

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“…Thus, the study of Setcos (10) asserts that noise in the dental clinic determined to be below 85 db(A) making it risk free to noise induced hearing loss. On the other hand, the audiogram of dentists in Saudi Arabia revealed that a significant number of dentists have a drop in the 4000 Hz audiogram frequency and 16.6% of dentists have tinnitus, 14.7% have difficulty in speech discrimination, 64% have difficulty in speech discrimination combined in a background noise (11). Pure tone audiometric evaluation among 80 physicians and 137 dentists revealed that dentists have a greater loss of hearing compared to physicians (12).…”

Section: Introductionmentioning

confidence: 99%

Hearing Threshold of Dental Practitioners in Various Clinical Settings

Medel

2018

IAM

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Objectives: The purpose of this study was to evaluate the relationship of the working environment's noise intensity level, distance from the source of noise, duration of the noise exposure and age of dentist to the hearing threshold level of general dental practitioners, dental students and dental supervisors and to determine if the noise in a dental facility can cause noise induced hearing loss. Materials and Methods: Thirty participants per group were enrolled in the study. The noise intensity level was measured with the use of noise level meter placed at the collar area of the operator and at the center of the room. The distance of noise exposure was set to 0.15 meters to simulate close proximity noise exposure of general dental practitioners and dental students while 2 meters was set for dental supervisors to represent exposure away from the sound source. The duration of noise exposure and age of the participants were determined with the use of a questionnaire. The participants were requested to have audiometric testing to determine their hearing threshold level. Results: There was a weak negative correlation of noise intensity level to hearing threshold level at 1000 Hz, 2000 Hz for the left ear and 2000 Hz for the right ear. However, distance from sound source, duration of sound exposure and age of the dentist were positively correlated to hearing threshold level at 3000 Hz, 4000 Hz, 6000 Hz and 8000 Hz. Noise intensity level did not reach the hazardous level on an 8-hour time weighted average. Conclusion: The Noise intensity level in a dental environment is considered to be safe to dentists who are practicing their profession. The age of the dentist and the duration of exposure from noise are the major factors in the increase in the hearing threshold level of a dental practitioner.

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Noise level of dental handpieces and laboratory engines

Cited by 39 publications

References 10 publications

Acoustic Noise Levels of Dental Equipments and Its Association with Fear and Annoyance Levels Among Patients Attending Different Dental Clinic Setups in Jaipur, India

Acoustic Noise Levels of Dental Equipments and Its Association with Fear and Annoyance Levels Among Patients Attending Different Dental Clinic Setups in Jaipur, India

Noise levels in a dental teaching institute - A matter of concern

Hearing Threshold of Dental Practitioners in Various Clinical Settings

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