Development of 3D-printable crown with mechanically compatible to human enamel

2022 Fiscal Year Final Research Report

• Project/Area Number: 21K21047
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0907:Oral science and related fields
• Research Institution: Kyushu Dental College
• Principal Investigator: Sodeyama Minako 九州歯科大学, その他部局等, 特別研修員 (40911037)
• Project Period (FY): 2021-08-30 – 2023-03-31
• Keywords: 3Dプリント / ポリマー含浸セラミックス / エナメル質

Outline of Final Research Achievements

This study aimed to develop a novel 3D-printable polymer-infiltrated ceramic network (PICN) composite with mechanically comparable to human teeth. The 3D-printable resin was prepared from silica, HEMA, solvents, photo-initiator, and photo-absorber. The resin was printed using an SLA 3D-printer, then sintered, consequently resin-infiltration and polymerization. The obtained 3D-printed PICN was characterized by mechanical and physicochemical properties and printability. The results showed that the 3D-printed PICN had a mechanical compatibility with human teeth, superior physicochemical properties. The printability was improved by the addition of the photo-initiator up to 1 %.

Free Research Field

歯科材料

Academic Significance and Societal Importance of the Research Achievements

近年、3Dプリント用素材の研究開発が精力的に行われており、種々の材料が実現されている。一方、エナメル質と同じ硬さの3Dプリント用素材を初めて報告したのは本研究のみである。将来的に、実用的なエナメル質と同じ力学的性質をもつ3Dプリント冠が実現すれば、次世代の歯科材料として期待できる。