Marginal Fit of Fixed Bridges Made Using Accelerated-type Gypsum-bonded Investments
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概要
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Purpose : This study evaluated the marginal fit of fixed bridges constructed using accelerated-type gypsum-bonded investment and compared them with fixed bridges constructed using conventional-type investment.Materials and Methods : Four types of accelerated-type gypsum-bonded investment and one type of conventional-type investment were used. A three-unit fixed bridge was cast in 12% gold-silver-palladium alloy and Type III gold alloy using different types of investment. Each bridge was seated in the master die, and the margins were inspected via microscopy.Results : The results failed to show any significant differences between the bridges constructed from either alloy using the accelerated gypsum-bonded investment and those constructed using the conventional investment. In most of the investments, the gold bridges had slightly smaller marginal gaps than the 12% gold-silver-palladium alloy bridges, but the differences were not significant.Conclusion : The results obtained indicated that the fit of fixed bridges made in accelerated gypsum-bonded investment is similar to that of bridges made in conventional investment.
- 日本補綴歯科学会の論文
- 2003-10-01
著者
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Mori Yasushi
Department Of Prosthodontics Asahi University School Of Dentistry
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Mori Yasushi
Department Of Applied Physics Faculty Of Engineering University Of Tokyo
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Jing Tan
Department Of Prosthodontics School Of Stomatology Beijing University
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Yamauchi Mutsuo
Department Of Prosthodontics Asahi University School Of Dentistry
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Kishii Jiro
Department Of Prosthodontics Asahi University School Of Dentistry
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SUWA Kenji
Post-doctoral Institute of Clinical Dentistry, Asahi University
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OKADA Mitsuaki
Post-doctoral Institute of Clinical Dentistry, Asahi University
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KASAMURA Kenichiro
Post-doctoral Institute of Clinical Dentistry, Asahi University
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NAGASAWA Tooru
Department of Prosthodontics, Asahi University School of Dentistry
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Suwa Kenji
Post-doctoral Institute Of Clinical Dentistry Asahi University
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Kasamura Kenichiro
Post-doctoral Institute Of Clinical Dentistry Asahi University
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Nagasawa Tooru
Department Of Prosthodontics Asahi University School Of Dentistry
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Okada Mitsuaki
Post-doctoral Institute Of Clinical Dentistry Asahi University
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