| Project/Area Number |
24592967
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Dental engineering/Regenerative dentistry
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| Research Institution | Asahi University (2013-2014)
Showa University (2012) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
HOTTA Yasuhiro 昭和大学, 歯学部, 准教授 (00245804)
SHIBATA Yo 昭和大学, 歯学部, 助教 (30327936)
KATAOKA Yu 昭和大学, 歯学部, 助教 (90527300)
YAMADAA Naoko 朝日大学, 歯学部, 助教 (90454264)
HORI Masaharu 朝日大学, 歯学部, 助教 (70528075)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | ケイ酸カルシウム / 生体材料 / リン酸カルシウム / 硬組織補填材 / 歯科材料 / 歯科用石膏 |
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| Outline of Final Research Achievements |
Calcium phosphate is known as a major component of biological hard tissues. This study aimed to produce calcium phosphate by recycling kneaded surplus gypsum. β-dihydrate gypsum was derived from commercial dental β-hemihydrate gypsum, which was mechanically powdered and mixed with the liquid component of a commercial zinc phosphate cement. This mixture was fired at 1200°C and evaluated by XRD analysis, thermal analysis and scanning electron microscopy (SEM). An acceptable ratio of mixing was 4 g of β-dihydrate gypsum powder to 1.5 ml of phosphoric acid liquid. XRD peaks were monotonic below 800°C, but new β-TCP was formed by firing at 900°C or more, although TG-DTA analysis of synthetic β-TCP suggested that some residual dihydrate gypsum remained in the sample. SEM images indicated a fused-block bone-like structure covered with phosphorus and calcium. These results suggest that production of synthetic β-TCP is possible through ecological techniques using recycled materials.
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