715 歯科インプラント実習を目的としたアパタイト/レジン模擬骨に関する研究(OS5-(2) インプラントおよび生体材料,オーガナイズドセッション)

概要

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The demand for dental implant has been increasing now. Many dentists have to practice dental implant operation. Sense of finger is the most important in dental implant operation. In this research the hydroxyapatite/UDMA composite was made for simulated bone that help dentists experiencing sense of finger. The ratio of calcined hydroxyapatite was changed from 0wt% to 30wt%, the ratio of non-calcined hydroxyapatite was changed from 0wt% to 25wt%, and those were characterized by SEM, Vickers hardness test and compression test. As a result, gaps of UDMA particles were filled by HA particles, and HA in gaps of UDMA particles increased with increasing mixing ratio of HA in the SEM observation. In the Vickers hardness test, the maximum Vickers hardness of hydroxyapatite/UDMA composite was 26Hv at 20wt% of calcined hydroxyapatite, and that was close to Vickers hardness of pig's jawbone (26.1Hv). In the compression test, the maximum Young's modulus of hydroxyapatite/UDMA composite was 5.1GPa at 25wt% of calcined hydroxyapatite.
2009-08-25