高精度6自由度運動測定器の開発研究  [in Japanese] Development Research on a High-accuracy Measuring System with Six-Degree-of-Freedom Movement Detection  [in Japanese]

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Author(s)

    • 坂東 永一 BANDO Eiichi
    • 徳島大学歯学部歯科補綴学第二講座 Department of Fixed Prosthodontics, School of Dentistry, The University of Tokushima

Abstract

目的: 動的な咬合解析のために必要な6自由度運動測定器について, 著者らの研究を中心に測定器開発の経緯と現状ならびに将来展望について述べる.<BR>研究の選択: 食事などの機能時も含めて, 咬合接触状態ならびに離開の状態を観察する手段として, 歯や顎の三次元形態とその6自由度運動を測定して解析する方法は, 最も有望な方法と考えられる.本稿では運動測定に的を絞り, 報告されている各種測定法の特徴と, その測定器を用いて得られた成果についてまず紹介する.次に被験者に種々の高さのクラウンを装着した研究から得られた, 臨床的に目指すべき咬合の精度について述べる.さらに, 必要な精度を達成するために著者らが行っている磁気方式の各種測定器の現状を報告し, 咬合の可視化についての将来展望について触れる.<BR>結果: 咬合面の誤差が10μm以下であれば, 臨床上問題を生じることはないと考えられるので, 動的な状態も含めて意味のある咬合解析を行うためには, 300Hzの動特性とμmオーダの精度をもった6自由度運動測定器が必要である.<BR>結論: 咬合可視化装置は咬合に関する異なる見解を統一して, 臨床での咬合治療を確実なものとするための有効なツールとなると期待できる.咬合可視化装置の主要構成要素である高精度6自由度運動測定器の1日も早い開発が待たれる.

Purpose: We have made several new types of jaw-tracking devices to perform kinematic analyses of dental occlusion. The present paper discusses the research history behind the development of sixdegree-of-freedom movement detectors. The current status and future directions of jaw-movement research are also discussed.<BR>Study selection: One of the best ways to evaluate the kinematic aspects of dental occlusion is three-dimensional computer analysis. Research in this area has linked three-dimensional tooth-and jaw-shape data with six-degree-of-freedom movement data. The main features and research outcomes of previously reported jaw-tracking devices are introduced herein. Several studies evaluating the effect of different heights of occlusal restoration have suggested fundamental ideas for the accuracy required in clinical occlusal adjustments. Progress of our new movement detector, which applies magnetic phase fields, and the prospects of computer technologies for visualizing kinematic occlusion, are also reported.<BR>Results: When occlusal adjustment was performed for the level of 10μm, clinical problems of stomatognathic function caused by occlusal problems could be prevented. This finding suggests that performance of jaw-tracking devices should be finer than the level of 10μm. Sampling frequency of the measuring system should be faster than 300Hz.<BR>Conclusions: Computer visualizing systems for dental occlusion have the potential to resolve various theoretical issues in dental research and clinics. Six-degree-of-freedom movement detectors with high specifications seem to offer an essential component for such research.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 46(3), 309-323, 2002-06-10

    Japan Prosthodontic Society

References:  51

Cited by:  7

Codes

  • NII Article ID (NAID)
    10008630586
  • NII NACSIS-CAT ID (NCID)
    AN00197911
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03895386
  • Data Source
    CJP  CJPref  J-STAGE 
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