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Studies on the marginal leakage of matal inlay restoration using the Mercox・Rodamin method

Research Project

Project/Area Number 07672101
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Conservative dentistry
Research InstitutionFukuoka Dental College

Principal Investigator

TAMURA Naoharu  Fukuoka Dental College・Faculty of Dentistry, Associate Professor, 歯学部, 助教授 (30113129)

Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1996: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1995: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsMercox・Rhodamin method / microleakage / metal inlay / cement / base / メタルインレー
Research Abstract

In resent years, adhesive luting cement which adhere to the tooth and metal substances were developed and are widely used in dental clinic.
The purpose of this study was to examine the marginal microleakage of metal inlay which were cemented by Zinc Phosphate Cement, Glass lonomer Cement, Glass Ionomer Resin Cement and Adhesive Resin Cement, using Mercox・Rhodamin Microleakage test methood.
Test 1 : Metal inly were cemented in the simple occlusal class I cavity in molar by various luting cements. After 2000times thermal cycling (4-60゚C), microleakage were tested by Mercox・Rhodamin. The results were as follows :
1. In the floor of the cavity (pulpal wall) on cemented metal inlay, microleakage was found.
2. In all specimen cemented by Zinc Phosphate Cement, microleakage reaching the floor of cavity was observed.
3. The out line form is one of the major factors to influence microleakage.
Test 2 : In clinic, it sometimes happens that metal inlay is cemented in the cavity from which the softdentin was removed after taking the impression. Test 2 simulated these cases. MO class II cavity with and without Base and defects which should be base in the floor and axial wall of cavity, are cemented by three kinds of cements : two kinds of Glass Ionomer Resin Cement (Lute and Vitremer) and Adhesive Resin Cement (Super Bond C&B). After 2000 times thermocycle (4゚C * 60゚C), microlealage were tested by Mercox・Rhodamin Method. The results were as follows :
1. In the pulpal wall, the base and the defect which should have been the base did not influence microleakage reaching the side wall (distal, buccal and lingual wall) and the pulpal wall. But when the defect extended to the side wall, microleakage increased.
2. The base and the defect in the axial wall, increased microleakage.
3. In most cases, microleakage were found in the cervical wall.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (3 results)

All Other

All Publications (3 results)

  • [Publications] 田村尚治他: "メルコックス・ロ-ダミン法によるメタルインレーの辺縁漏洩について" 日本歯科保存学雑誌. 39(秋季特別). 114 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Tamura, Naoharu et al.: "Marginal Leakage of class Metal Inlay Restoration by the Mercox・Rhodamin Method" Japan. J.Conserv. Dent.Vol. 39, Autumn lssue. 114 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 田村尚治 他: "メルコックス・ロ-ダミン法によるメタルインレーの辺縁漏洩について" 日本歯科保存学雑誌. 秋季特別. 114- (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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