Standardization and application of dental digital data for 3D printer

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K10077
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 57050:Prosthodontics-related
• Research Institution: Showa University
• Principal Investigator: Hotta Yasuhiro 昭和大学, 歯学部, 准教授 (00245804)
• Co-Investigator(Kenkyū-buntansha): 中納 治久 昭和大学, 歯学部, 教授 (80297035)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: CAD/CAM / 3Dプリンタ / デジタルデータ / コンポジットレジン / 相互運用

Outline of Final Research Achievements

Manufacturing method of dental prosthesis using additive method has been limited to the Vat Photo Polymerization (VPP) method. VPP materials are mainly used as temporary crowns due to their strength and color reproducibility and are not fully utilized as crown prosthesis. Therefore, we prototyped a material jetting (MJT) photopolymerized resin material that can be printed in full color. As a result, the material has properties similar to those of the CAD/CAM crown material currently used in functional category IV medical care in Japan, which is currently used in the aesthetic field, paving the way for practical application. Regarding interoperability of CAD/CAM data, a standard for an interoperable data format for additive manufacturing data has reached the final approval stage of publication as ISO 18618 (Ed.3).

Free Research Field

歯科理工学

Academic Significance and Societal Importance of the Research Achievements

今回開発した材料噴射(MJT)方式の光重合樹脂材料を用いることで、審美的に優れた歯科補綴装置を簡便に製作できるようになり、これまでの切削加工法と比べ材料の無駄を減らし、より複雑な色調再現が可能となる。また，CAD/CAMデータの相互運用性可能な付加製造データについての規格が，ISO 18618（Ed.3）としてまとまることで、特定のシステムに依存しない製作が可能となる。