Development of a complete denture suitable for long-term care medicine produced with PEEK resin and a 3D printer.

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K18620
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 57050:Prosthodontics-related
• Research Institution: The Nippon Dental University
• Principal Investigator: MIURA DAISUKE 日本歯科大学, 生命歯学部, 助教 (40804125)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: PEEK樹脂 / 3Dプリンター / 積層造形

Outline of Final Research Achievements

In the first year of the study, the moulding method of 3D moulded PEEK resin was investigated and it was found that the direction of layering affected the mechanical properties of the 3D moulded PEEK resin. In the second year, the fundamental properties of the moulded PEEK resin after accelerated degradation were determined. The results showed that the properties of the PEEK resin produced by thermal-melting after accelerated degradation were almost unchanged from the properties before degradation. The moulded PEEK resin was found to be adaptable to the oral cavity of patients requiring care and support.

Free Research Field

有機材料

Academic Significance and Societal Importance of the Research Achievements

現在，わが国において要介護者は増加の一途を辿り，歯科医療界でも大きな問題となっている．要介護者が使用する義歯には「生体親和性」「高靭性」「義歯製作時間の短縮」の三つの要素が求められる．PEEK樹脂は靭性に富み，耐疲労性が高く生体親和性が良好なことから金属の代替材料として，様々な歯科補綴物への応用が検討されており，歯科界において極めて有望な材料であるが，この樹脂の歯科での用途は比較的小さな補綴物に限定されている．今回の研究では３Dプリンターで製作したPEEK樹脂は加速劣化後も優れた機械的性質を有していることがわかった．その結果，歯科補綴物にも応用が可能であることが示唆された．