Journal of the korean academy of Pediatric Dentistry (대한소아치과학회지)

Korean Academy of Pediatric Dentistry (대한소아치과학회)
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Effect of Noise Cancelling Devices on Dental Handpieces Using Ear Model

귀 모형을 이용한 치과 핸드피스에 대한 소음 저감 장치의 효과 분석

  • Mo, Seunghan (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Kang, Jungu (College of Dentistry, Yonsei University) ;
  • Kim, Ik-Hwan (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Choi, Hyung-Jun (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Song, Je Seon (Department of Pediatric Dentistry, College of Dentistry, Yonsei University) ;
  • Shin, Yooseok (Department of Conservative Dentistry, College of Dentistry, Yonsei University)
  • 모승한 (연세대학교 치과대학 소아치과학교실) ;
  • 강준구 (연세대학교 치과대학) ;
  • 김익환 (연세대학교 치과대학 소아치과학교실) ;
  • 최형준 (연세대학교 치과대학 소아치과학교실) ;
  • 송제선 (연세대학교 치과대학 소아치과학교실) ;
  • 신유석 (연세대학교 치과대학 보존과학교실)
  • Received : 2019.06.14
  • Accepted : 2019.08.27
  • Published : 2020.02.29
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Abstract

This study intended to evaluate noise level of dental handpieces and the effects of noise cancelling devices. An ear model was designed to measure the level of the noise delivered to the inner ear during dental handpiece operation. The level of noise was measured in various conditions using the ear model and the portable noise meter. Noise level was measured again after applying of 4 different noise cancelling devices to the model ear. The noise level of dental handpieces was 82.5 - 84.4 dB. When 4 types of noise canceling devices were applied, the noise level reduced to 67.4 - 73.8 dB. All 4 devices had statistically significant effect in reducing the noise of the handpiece. Considering the intensity and exposure time, noise in dental clinics can cause hearing damage to dentists. For protection from the risk of occupational hearing damages, noise canceling devices can be recommended.

이 연구는 치과 핸드피스의 소음 수준과 소음 저감 장치의 효과를 평가하기 위한 것이다. 귀 모형은 치과용 핸드피스 작동 중에 내이에 전달되는 소음의 수준을 측정할 수 있도록 설계되었다. 소음의 크기는 귀 모형과 휴대용 소음 측정기를 사용하여 다양한 조건에서 측정되었다. 시판되는 4종의 소음 저감 장치를 귀 모형에 적용한 후 같은 조건에서 소음 수준을 측정한 뒤 비교하였다. 치과 핸드피스의 소음 수준은 조건에 따라 약 82.5 - 84.4 dB이었다. 4종의 소음 저감 장치를 적용했을 때 소음은 67.4 - 73.8 dB로 감소했다. 4종의 장치 모두 핸드피스의 소음을 줄이는데 유의한 효과가 있었다. 강도와 노출 시간을 고려할 때, 치과 소음은 치과 의료진에게 청력 손상을 일으킬 수 있다. 직업적 청력 손상 위험을 예방하기 위해 소음 저감 장치 사용을 고려할 수 있다.

Keywords

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