| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
The experimental cements were prepared using liquids of five different resin monomers (Bis-GMA, UDMA, TEGDMA, MMA or HEMA), and three different cement powders (PEMA, PMMA or silicone powder). The setting time, film thickness, retentive force and shear strengths of the experimental cement with and without thermal cycling were determined. Under the present experimental conditions, the resin monomers affected the setting time and film thickness of the cements. Bis-GMA in the cement liquid made the setting time shorter and the film thickness smaller than those of UDMA. HEMA in the MMA liquid appeared to reduce the film thickness and the strength of the experimental cements, while which tend to increase the retentive force on cement-retained crowns on implant abutment.
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