各種接着試験法における接着界面の破面解析および応力解析  [in Japanese] Fractographical and Stress Analysis of Bonding Surface in Varieties of Bond Strength Testing  [in Japanese]

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Author(s)

    • 倉治 七重 KURAJI Nanae
    • 日本歯科大学歯学部歯科補綴学教室第2講座 Department of Crown and Bridge, The Nippon Dental University, School of Dentistry at Tokyo
    • 小城 研二 KOJO Kenji
    • 日本歯科大学歯学部歯科補綴学教室第2講座 Department of Crown and Bridge, The Nippon Dental University, School of Dentistry at Tokyo
    • 新谷 明喜 SHINYA Akiyoshi
    • 日本歯科大学歯学部歯科補綴学教室第2講座 Department of Crown and Bridge, The Nippon Dental University, School of Dentistry at Tokyo
    • 横塚 繁雄 YOKOZUKA Shigeo
    • 日本歯科大学歯学部歯科補綴学教室第2講座 Department of Crown and Bridge, The Nippon Dental University, School of Dentistry at Tokyo

Abstract

To clarify the differences in fracture mechanism when different modes of load were applied, two types of dental adhesives were used in various tests-for tensilestrength, compressive shear strength, flexural strength and cleavage strength-and fractographical analyses of the bonding surface after breakage were perfomed by SEM. Furthermore, the distribution of stress in the adhesive layer subjected to tensile, compressive shear and torsion loads was examined by three-dimensionalphotoelastic analysis. The results were as follows:<BR>1. The kind of fracture occurring in two types of adhesive was cohesive fracture due to a force induced in the adhesive layer.<BR>2. Fractographical analysis of Panavia EX by SEM revealed the occurrence of a brittle fracture characterized by a river-like pattern inall but one of the tests for tensile strength.<BR>3. Super Bond C & B presented a ductile fracture featuring elongated dimples in tests for tensile strength, 4-point flexural strength, and compressive shear strength. In cleavage strength and 3-point flexural strength test, the ductile fracture had tear dimples.<BR>4. The compressive shear strength test revealed that the amount of stress was the smallest in the central area of the bonding surface and tended to increase toward the upper and lower margins.<BR>5. In the torsion test, stress gradually increased from the center outward.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 42(1), 135-146, 1998-02-01

    Japan Prosthodontic Society

References:  14

Cited by:  3

Codes

  • NII Article ID (NAID)
    10008168724
  • 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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