各種歯科用合金と新低溶陶材の焼付に関する研究 : 3点曲げ試験による焼付強さについて  [in Japanese] A Study on Bonding Characteristics of Low Fusing Porcelain to Different Dental Alloys : Bond Strengths Measured by Three-Point Bending Test  [in Japanese]

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Author(s)

    • 塩沢 育己 SHIOZAWA Ikumi
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 佐藤 尚弘 SATO Takahiro
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 栗山 實 KURIYAMA Minoru
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 大竹 貫洋 OTAKE Takehiro
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 浜野 英也 HAMANO Hideya
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 小椋 直樹 OGURA Naoki
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 長谷川 成男 HASEGAWA Shigeo
    • 東京医科歯科大学歯学部歯科補綴学第2講座 Department of Prosthodontics II, Faculty of Dentistry, Tokyo Medical and Dental University
    • 礪波 健一 TONAMI Ken-ichi
    • 東京医科歯科大学歯学部歯科理工学第1講座 Department of Dental Technology I, Faculty of Dentistry, Tokyo Medical and Dental University
    • 高橋 英和 TAKAHASHI Hidekazu
    • 東京医科歯科大学歯学部歯科理工学第1講座 Department of Dental Technology I, Faculty of Dentistry, Tokyo Medical and Dental University
    • 西村 文夫 NISHIMURA Fumio
    • 東京医科歯科大学歯学部歯科理工学第1講座 Department of Dental Technology I, Faculty of Dentistry, Tokyo Medical and Dental University

Abstract

This study was conducted to compare bond strengths of three different kinds of dental alloys and one low fusing porcelain (Deguceram Gold, DG) with a fusing temperature around 780°C. The tested alloys were the recommended metal for Golden-Gate-system (Degunorm, DN), a gold-platinum alloy (Casting Gold MC type IV, CG), and a gold-palladium-silver alloy (Castwell MC 12, CW). A conventional metal cerami combination, a gold-platinum-palladium alloy (Degudent-Universal, DU)/VMK 68 was also tested as the control for bond strength.<BR>A uniform thickness of 1 mm of porcelain was applied for an 8 mm in the central portion of metal specimens measuring 25×3×0.5mm. The specimens were subjected to a three-point bending test, and the load of bond failure was recorded. Bond strength (in MPa) was calculated from the load at the porcelain separation.<BR>The debonded metal surface was observed by metal microscopy, SEM, and EPMA to examine the mode of bond failure.<BR>The mean bond strengths of DN/DG, CG/DG, and CW/DG were 50.6, 56.1, and 65.2 MPa respectively, and were compared with the conventional DU/VMK 68 combination (40.4 MPa). Elements from porcelain such as Si, K, and Sn were observed on the debonded metal surface by EPMA. The results suggested that the low-fusing porcelain (DG) not only bonds to the recommended alloy but also to the ordinary dental alloys.

Journal

  • Nihon Hotetsu Shika Gakkai Zasshi

    Nihon Hotetsu Shika Gakkai Zasshi 42(5), 867-874, 1998-10-10

    Japan Prosthodontic Society

References:  20

Cited by:  2

Codes

  • NII Article ID (NAID)
    10008171155
  • 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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