可撤性補綴装置の3次元的挙動 : 第1報計測システムとその応用  [in Japanese] Three-dimensional Dynamics of Removable Prosthetics : Part 1. Measuring System and Observations  [in Japanese]

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Author(s)

    • 加藤 光雄 KATO Mitsuo
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
    • 笛木 賢治 FUEKI Kenji
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
    • 羽毛田 匡 HAKETA Tadasu
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
    • 熊谷 靖司 KUMAGAI Yasushi
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
    • 塩崎 智彦 SHIOZAKI Tomohiko
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
    • 中村 和夫 NAKAMURA Kazuo
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University
    • 藍 稔 AI Minoru
    • 東京医科歯科大学歯学部歯科補綴学第一講座 The First Department of Prosthodontics, Faculty of Dentistry, Tokyo Medical and Dental University

Abstract

The removable partial denture (RPD) designed without careful consideration shows unfavorable movement in oral cavity during function. It was considered that the RPD designed for minimizing mobility is advantageous for maintaining oral health. However, the actual behavior of the RPD during jaw function is unknown. Therefore, a new measuring system for the dynamic behavior of the RPD was reported.<BR>This system puts the theory of stereophotography in practice. In this study, the three reference points were attached to the RPD with an extension rod. Two sets of subminiature camera were fixed to the patient's head, and the images of the points in each camera were recorded on videotape. Two-dimensional positions of each point was obtained from graphic data processing of stilled images of the recordings. The space coordinates of each point could be calculated from the values of rectangular plane coordinates thereof. By knowing the relation of position of each point, the change of position of any point on the RPD could be measured with time. The results of calibration and some examples were reported in this paper. From the results, though the accuracy was not sufficient, this system was considered to be useful for measuring the dynamic behavior of the RPD.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 41(4), 719-728, 1997-08-01

    Japan Prosthodontic Society

References:  16

Cited by:  5

Codes

  • NII Article ID (NAID)
    10008167500
  • 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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