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Casting Pure Titanium into Commercial Phosphate-bonded SiO2 Investment Molds

Department of Dental Technology, Osaka University Faculty of Dentistry, 1-8, Yamada-oka, Suita, Osaka, Japan 565

H. Kimura

Department of Dental Technology, Osaka University Faculty of Dentistry, 1-8, Yamada-oka, Suita, Osaka, Japan 565

E.P. Lautenschlager

Division of Biological Materials, The Dental School, Northwestern University, Ward Memorial Building, 311 East Chicago Avenue, Chicago, Illinois 60611

J.H. Chern Lin

Division of Biological Materials, The Dental School, Northwestern University, Ward Memorial Building, 311 East Chicago Avenue, Chicago, Illinois 60611

J.B. Moser

Division of Biological Materials, The Dental School, Northwestern University, Ward Memorial Building, 311 East Chicago Avenue, Chicago, Illinois 60611

E.H. Greener

Division of Biological Materials, The Dental School, Northwestern University, Ward Memorial Building, 311 East Chicago Avenue, Chicago, Illinois 60611

Pure titanium was cast into five different phosphate-bonded SiO₂ investment mold materials (at 350°C) with an argon-arc melting and pressure casting machine. The mesh castability, the fit of the MOD inlay castings, and the Knoop hardness and the micro-structure in cross-sections of castings were examined. The setting and thermal expansion, the compressive strength, and the x-ray diffraction analysis of the investments were also measured. The castability, the fit, and the thickness of the reacted layer differed in degree among these investments, in spite of the same phosphate-bonded SiO2-type investment. A significant correlation was obtained between the thermal expansion (at 350°C) and the casting accuracy.

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Journal of Dental Research, Vol. 69, No. 12, 1800-1805 (1990)
DOI: 10.1177/00220345900690120301


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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Takahashi, J. Articles by Greener, E.H. Search for Related Content PubMed PubMed Citation Articles by Takahashi, J. Articles by Greener, E.H. Pubmed/NCBI databases Compound via MeSH Substance via MeSH Hazardous Substances DB MAGNESIUM COMPOUNDS MAGNESIUM OXIDE SILICON DIOXIDE TITANIUM Social Bookmarking                         What's this?