インプラントのスクリュー締結が周囲組織に及ぼす影響 : 模型実験  [in Japanese] Influence of Screw Tightening on Stress Distribution around Implant : An in vitro Experiment  [in Japanese]

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Author(s)

    • 齋賀 明彦 SAIKA Akihiko
    • 徳島大学歯学部歯科補綴学第一講座 Department of Removable Prosthodontics, The University of Tokushima, School of Dentistry
    • 市川 哲雄 ICHIKAWA Tetsuo
    • 徳島大学歯学部歯科補綴学第一講座 Department of Removable Prosthodontics, The University of Tokushima, School of Dentistry
    • 北岡 直樹 KITAOKA Naoki
    • 徳島大学歯学部歯科補綴学第一講座 Department of Removable Prosthodontics, The University of Tokushima, School of Dentistry
    • 友竹 偉則 TOMOTAKE Yoritoki
    • 徳島大学歯学部歯科補綴学第一講座 Department of Removable Prosthodontics, The University of Tokushima, School of Dentistry
    • 浜口 順弘 HAMAGUCHI Nobuhiro
    • 徳島大学歯学部歯科補綴学第一講座 Department of Removable Prosthodontics, The University of Tokushima, School of Dentistry

Abstract

Screw tightening of the superstructure of osseointegrated implants often produces unsuitable strain on the prosthesis and surrounding bone． The purpose of this study was to investigate the effects of screw tightening on surrounding bone in several conditions．<br/>　Three Steri-oss® implants were placed in an acrylic resin experimental model， and a three-unit framework was fabricated on the implants． The fit of the framework was judged excellent by laboratory microscopy． Ten strain gauges were attached on the experimental model surface around the implants． The strain was measured after every screw was tightened by a custom-designed torque controller． Static and dynamic strain was recorded． Each test was repeated five times under the same conditions．<br/>　The results were as follows：<br/>　1．The order of screw tightening affected stress distribution． The distribution was unequal and asymmetrical to the implants．<br/>　2．Staged tightening of the screws decreased the sum of all strains．<br/>　3．Tightening torque does not affect stress distribution．<br/>　4．Misfit of the abutment／superstructure joint increased the sum of all strains．<br/>　5．Strain induced by tightening of the second or third implant was greater than that by tightening the first one．

Journal

  • Journal of Japanese Society of Oral Implantology

    Journal of Japanese Society of Oral Implantology 15(1), 1-1-9-9, 2002-03-31

    Japanese Society of Oral Implantology

References:  22

Cited by:  1

Codes

  • NII Article ID (NAID)
    10008137216
  • NII NACSIS-CAT ID (NCID)
    AN10072606
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    09146695
  • DOI
    10.11237/jsoi.15.1
  • Data Source
    CJP  CJPref  J-STAGE 
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