Sound Intensity of High Frequency Noise Source in Dental Clinics.

牙科诊所高频噪声源的声强。

基本信息

  • 批准号:
    06672071
  • 负责人:
  • 金额:
    $ 1.34万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1994
  • 资助国家:
    日本
  • 起止时间:
    1994 至 1995
  • 项目状态:
    已结题

项目摘要

From the viewpoint of occupational health, I have interested in frequency analysis on high frequency noise made by dental air turbine handpieces or ultrasonic scalers in dental clinics.In this study, I would like to measure the sound power from these dental equipments, by means of sound intensity measurement.In the first year, I had purchased a pair of sound intensity measuring devices (microphones) and connected them with a 2-channel FFT analyzer, and I have built a system to measure the sound intensity by using the method of cross spectral analysis. Then, in the laboratory, I gave a continuous sound of which frequency was 5 to 7kHz as mimic sound of dental air turbine handpiece, and illustrated a figure of sound intensity vectors. Through this preliminary experiment, I have found that if a sound source is a point such as dental air turbine handpieces, positioning of the microphones affect the measured value critically. I knew that I would put a greater deal of work in measuring sound … More intensity than I expected ; those are necessity of multi-point measurement, accurate positioning in each grid point, intricate operation of the FFT analyzer severally.The next year, for making rational experiments, I had prepared a 'grid-point moving board' making use of a drafting board, so that I was able to measure sound intensity vector at any grid point on the board in an area of around 60x60cm. For the purpose of realizing semi automatic measurement, the FFT analyzer was controlled by personal computer through GPIB interface, then it saved time for multi point measurement very well. Results show that sounds of dental air turbine handpieces are scattered not only from the rotary part but also from the grip part of the handpiece analyzed by spectral analysis and sound intensity analysis.I regret that I should postpone the publication of the result of sound intensity measurement of actual sound on dental equipments which give us high frequency noise, because it was necessary that I spent many days to build up the system mentioned above. The experiments should be continued to attain the desired end. Less
从职业健康的角度来看,我对牙科诊所的牙齿空气涡轮机式摩式鳞片器产生的自由尖噪感兴趣。在这项研究中,我喜欢通过声音强度测量来测量牙科设备的声音。在第一年,我采用了一对声音强度测量设备)通道FFT分析仪,并且我通过使用跨频谱分析方法来衡量声音强度。哪个频率为5次,通过此原始实验,我发现了IFA声音源是一个重点的空气涡轮机,在测量值中的测量值更大。我预期的是多点测量的必要条件董事会,我能够通过GPIB界面来衡量板上的任何网格点。牙齿空气不是旋转部分散布在旋转部位,而是通过频谱分析和声音强度分析从手机D上散布的。我很遗憾,我推迟了在牙科设备上的声音强度测量的发表,这给了我们在上面建立系统的几天

项目成果

期刊论文数量(4)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
"Preliminary Study on High-frequency Vibration in Dental Clinics" J.Dental Health. 44-4. 624-5 (1994)
“牙科诊所高频振动的初步研究”J.Dental Health。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
那須郁夫,堀内俊孝,明石光也 他4名: "歯科診療時の高周波振動に関する予備的研究" 口腔衛生学会雑誌. 44. 624-625 (1994)
Ikuo Nasu、Toshitaka Horiuchi、Mitsuya Akashi 等 4 人:“牙科治疗期间高频振动的初步研究”口腔健康学会杂志 44. 624-625 (1994)。
  • DOI:
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    0
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NASU Ikuo其他文献

NASU Ikuo的其他文献

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{{ truncateString('NASU Ikuo', 18)}}的其他基金

Effect of low concentration fluoride in senescence of mesenchymal stem cells
低浓度氟对间充质干细胞衰老的影响
  • 批准号:
    16K11898
  • 财政年份:
    2016
  • 资助金额:
    $ 1.34万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Masticatory ability and the component ratio of natural-artificial-functional teeth in the community elderly person
社区老年人咀嚼能力及天然与人工功能牙的构成比
  • 批准号:
    12672017
  • 财政年份:
    2000
  • 资助金额:
    $ 1.34万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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