Experimental Ammonia-free Phosphate-bonded Investments Using Mg(H_2PO_4)_2
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概要
- 論文の詳細を見る
In previous study, we found that Mg(H_2PO_4)_2 instead of NH_4H_2PO_4 was available as a binder material for phosphate-bonded investments and possibly could be used to develop the phosphatebonded investment without ammonia gas release. The purpose of the present study was to develop the experimental ammonia-free phosphate-bonded investments by investigating suitable refractories. Mg(H_2PO_4)_2・nH_2O and MgO were prepared as a binder. Cristobalite and quartz were selected as refractories. The powder ratio of MgO/ Mg(H_2PO_4)_2・nH_2O was set constant at 1.2 according to our previous findings. Fundamental properties of dental investment such as strength, manipulation and expansion were evaluated. Using cristobalite as the refractory material, further investigations were performed. The refractory/binder ratio was definitely effective. The increase of this ratio led to low mold strength and large mold expansion. The present findings suggested that C5 was desirable for dental investment.
- 日本歯科理工学会の論文
著者
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TAMAKI Yukimichi
Department of Oral Biomaterials and Technology, School of Dentistry, Showa University
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MIYAZAKI Takashi
Department of Oral Biomaterials and Technology, School of Dentistry, Showa University
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ZHANG Zutai
Department of Oral Biomaterials & Technology, Showa University School of Dentistry
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Miyazaki Takashi
Department Of Oral Biomaterials & Technology Showa University School Of Dentistry
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Miyazaki Takashi
Department Of Oral Biomaterials And Technology Showa University School Of Dentistry
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Zhang Z
Department Of Oral Biomaterials & Technology Showa University School Of Dentistry
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Zhang Zutai
Department Of Operative Dentistry Showa University School Of Dentistry
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Masuda T
Department Of Oral Biomaterials & Technology Showa University School Of Dentistry
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Miyazaki Takashi
Department Of Endocrinology And Metabolism Division Of Molecular Adaptation Research Institute Of En
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Tamaki Yukimichi
Showa Univ. School Of Dentistry Tokyo Jpn
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Tamaki Yukimichi
Department Of Oral Biomaterials & Technology Showa University School Of Dentistry
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Miyazaki Takashi
Department Of Animal Science Faculty Of Bioresources Mie University
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