多関接型接触式計測装置の歯科応用に関する基礎的研究 A Study on Application of Multiple Jointed Contact-Type Measuring Apparatus for Dental Use

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著者

    • 中島 照雄 NAKASHIMA Teruo
    • 東京医科歯科大学大学院医歯学総合研究科全人的医療開発学系専攻包括診療歯科学講座総合診療歯科学分野 General Dentistry, Department of Comprehensive Oral Health Care, Division of Comprehensive Patient Care, Graduate School, Tokyo Medical and Dental University

抄録

The measurement of oral maxillofacial region, including dentition and teeth, is important information for diagnosis and assessment of treatment in clinical dentistry. There are two kinds of the measuring systems, i. e., contact-type system and non-contact-type system. The latter mainly has been investigated in dentistry, because of its simplicity and quickness for measurement. However, since the objects in dentistry have complex shapes with curved surfaces and many dead angles, accuracy of values obtained by this system is insufficient for clinical use.<BR>Even though divided measurement is employed to overcome the problems, the increase of measuring element results in deterioration of the accuracy.<BR>In the present study, the accuracy of a contact-type measuring apparatus with 5 pivoting joints was investigated.<BR>For the cavity model, the depth and the width were measured. For the standardized dental cast which consists of three spheres, the diameter of three spheres and the distance of each sphere were measured.<BR>The values obtained by this apparatus were compared with those obtained by the precise 3D-measurement apparatus. The differences were insignificant in the cavity model. Significant difference was found in the standardized dental cast. However, the difference was very small, and so it is negligible in clinical use. By using this apparatus, the form of undercut and teeth was reconstructed completely. The results suggested that the multiple jointed contact-type measuring apparatus could be applied to the measurement in clinical dentistry.

収録刊行物

  • 口腔病学会雑誌

    口腔病学会雑誌 67(2), 155-162, 2000-06-30

    The Stomatological society, Japan

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各種コード

  • NII論文ID(NAID)
    10008137738
  • NII書誌ID(NCID)
    AN00302674
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03009149
  • データ提供元
    CJP書誌  J-STAGE 
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