A Passive Noise Attenuation Earplug Designed to Minimise Unwanted Air Turbine Driven High-Speed Dental Drill Noise.

IF 1.1 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
P Jiang, M A Atherton, B J Millar
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引用次数: 1

Abstract

Introduction: Air turbine dental drill noise contains high-frequency components that are of concern for patients and dental staff. Meanwhile, verbal communication between the dentist and patient is essential. Conventional active noise-cancelling headphones are ineffective for dental drill noise and simply suppress all sound and hinder communication.

Method: A compact passive earplug device was designed specifically to attenuate broadband high-frequency noise ranges from 5 to 8 kHz employing an array of quarter wavelength (QW) resonators. This device was 3D printed and tested against white noise to enhance the objectivity of analysis, using a calibrated ear and cheek simulator to effectively measure its performance.

Results: The results showed that the resonators produced an average reduction of 27 dB across the targeted frequency range. When compared with two proprietary passive earplugs, this developed passive device prototype was able to attenuate an average of 9 dB more across the target frequency range whilst delivering louder speech signals of 14 dB more. The results also show that using an array of resonators exhibits an accumulated effect of individual resonator performance.

Conclusions: This low-cost passive device could have a place in the dental clinic to reduce unwanted drill noise equivalent to the white noise high frequency spectra tested.

一种被动噪音衰减耳塞设计,以尽量减少不必要的空气涡轮驱动的高速牙钻噪音。
导读:空气涡轮牙钻噪声中含有患者和牙科工作人员关注的高频成分。同时,牙医和病人之间的语言交流是必不可少的。传统的主动降噪耳机对牙钻的噪音是无效的,只是抑制所有的声音,阻碍交流。方法:采用四分之一波长(QW)谐振器阵列,设计了一种紧凑的无源耳塞装置,专门用于衰减5至8 kHz的宽带高频噪声。为了提高分析的客观性,该设备经过了3D打印和白噪声测试,使用校准过的耳朵和脸颊模拟器来有效地测量其性能。结果:结果表明,谐振器在目标频率范围内平均降低了27 dB。与两种专有的无源耳塞相比,这种开发的无源设备原型能够在目标频率范围内平均衰减9 dB以上,同时提供14 dB以上的更响亮的语音信号。结果还表明,使用谐振器阵列表现出单个谐振器性能的累积效应。结论:这种低成本的无源装置在牙科诊所中具有一定的应用价值,可以减少与白噪声高频谱测试相当的不必要的钻头噪声。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
2.30
自引率
7.70%
发文量
0
期刊介绍: The European Journal of Prosthodontics and Restorative Dentistry is published quarterly and includes clinical and research articles in subjects such as prosthodontics, operative dentistry, implantology, endodontics, periodontics and dental materials.
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