Noise reduction using masking effect for dental drill noise

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K11111
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Conservative dentistry
• Research Institution: Osaka University
• Principal Investigator: Yamada Tomomi 大阪大学, 歯学研究科, 助教 (70452448)
• Co-Investigator(Renkei-kenkyūsha): KUWANO Sonoko 小林理学研究所, 研究員 (00030015) ; YASUNO Yoshinobu 小林理学研究所, 圧電応用研究室, 主任研究員 (40462254)
• Research Collaborator: INANAGA Kiyofumi ; OOTA Eri
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 歯科ドリル / 騒音 / 骨導 / 不快

Outline of Final Research Achievements

Patients in dental clinics perceive the bone-conducted sound via the teeth in addition to the air-conducted sound from the ear during the drilling of their teeth. In order to reduce the discomfort during treatment, it is necessary to find the characteristics of both the air-conducted and the bone-conducted dental drilling sounds. In this study, minimum audible threshold to the bone-conducted pure tone via a tooth was measured using an auditory testing device. Further, the psychological evaluation of the bone-conducted dental drilling sounds via teeth in drilling dental materials attached on their teeth　was examined. The sound levels of dental drilling noise around patient's head were measured. As the result, low frequency test tone via teeth were detected more sensitively.It was found that there were some difference in the psychological evaluation between air-conducted sounds and bone-conducted dental drilling sounds.

Free Research Field

歯科