Development of high performance zirconia implant based on biomimetics

2018 Fiscal Year Final Research Report

• Project/Area Number: 16K11629
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Prosthodontics/ Dental materials science and
• Research Institution: Kagoshima University
• Principal Investigator: Kono Hiroshi 鹿児島大学, 医歯学域歯学系, 講師 (20507165)
• Co-Investigator(Kenkyū-buntansha): 菊地 聖史 鹿児島大学, 医歯学域歯学系, 教授 (50250791) ; 有川 裕之 鹿児島大学, 医歯学域歯学系, 助教 (90128405)
• Research Collaborator: Shirakata Yoshinori
• Project Period (FY): 2016-04-01 – 2019-03-31
• Keywords: ジルコニア

Outline of Final Research Achievements

As As for the effect of firing temperature on mechanical properties of zirconia, it was large in dental Y-TZP. Therefore, it was suggested that low temperature degradation by autoclave was easy to occur if the sintering temperature was high. It was also suggested that even if the holding time of sintering temperature was short, a certain strength could be obtained.

As for the effect of heating rate on translucency of zirconia, no statistically significant difference was observed even if the heating time from standard firing schedule to sintering temperature was extremely shortened. Therefore, It was suggested that the heating rate to sintering temperature could not affect　translucency for both translucent TZP and PSZ.

Free Research Field

医歯薬学

Academic Significance and Societal Importance of the Research Achievements

近年の歯科医療における患者の審美に対する高度な要求や金属アレルギーに対する懸念を鑑みたメタルフリーレストレーションへの移行、デジタルデンティストリーの急速な発展に伴うCAD/CAMシステムの導入などを踏まえると、その核心的素材となり得るジルコニアのさらなる歯科応用が求められているのが現状である。したがって、本研究の社会的意義は高いものであると考える。