Development of artificial enamel with controllable mechanical properties

2019 Fiscal Year Final Research Report

• Project/Area Number: 17K17185
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Prosthodontics/ Dental materials science and
• Research Institution: Kyushu Dental College
• Principal Investigator: Ikeda Hiroshi 九州歯科大学, 歯学部, 助教 (80621599)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Keywords: コンポジット / エナメル質 / 歯冠修復物

Outline of Final Research Achievements

Mechanical properties such as hardness and elastic modulus are important for a crown restorative material. However, there is no practical materials with mechanical compatibility to human enamel. Purpose of this study is to fabricate organic-inorganic composite mimicking mechanical properties of human enamel. An SiO2-PMMA composite was synthesised via polymer infiltration process. The resultant composite has nano-dual network structure composed of SiO2 skeleton and infiltrated PMMA phase. Mechanical properties of this composite was close to those of human enamel.

Free Research Field

歯科材料

Academic Significance and Societal Importance of the Research Achievements

人工エナメル質は、数センチのブロック状の塊として得られるため、CAD/CAMシステムなどの機械加工によって歯冠形状に成型・加工できる。実用に耐えうる強度と審美性が得られれば、天然エナメル質と同等の機械的性質と審美性を併せもつ歯冠修復物が実現できる。