2022 Fiscal Year Final Research Report
Development of a digital workflow for fabrication of prosthetic devices using optimal structural design and laser sintering additive manufacturing
| Project/Area Number |
20K10081
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 57050:Prosthodontics-related
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| Research Institution | Tsurumi University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
新保 秀仁 鶴見大学, 歯学部, 学内講師 (40514401)
鈴木 恭典 鶴見大学, 歯学部, 准教授 (70257335)
栗原 大介 鶴見大学, 歯学部, 学内講師 (70535773)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | トポロジー最適化 / ３D形状データ / CAD / CAE / CAM / 積層造形 |
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| Outline of Final Research Achievements |
The purpose of this study was to develop the full digital fabrication method for removable dentures. Firstly, basic experiments were conducted on the processing accuracy of clasps and denture bases, which are difficulty fabrication in the denture components. The retentive force and fitting accuracy were confirmed. Next, full-digital fabrications of an occlusal splint using high-strength materials and a removable partial denture were attempted, and the possibility of clinical application was verified while exploring rational laboratory processes. As final goal of this study, the topology optimization of the framework, namely, the optimal structural design was performed by repeating CAD and CAE based on the simplest loading situation on the denture. After the framework was additively manufactured according to the topology 3D data using the Co-Cr alloy powder, overdenture was completed and delivered to the partially edentulous patient.
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| Free Research Field |
歯科補綴学
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| Academic Significance and Societal Importance of the Research Achievements |
義歯の製作をフルデジタルで製作するにあたり，個々の義歯構成要素をデジタル製作による基礎的研究を実施し，最適な製作方法を模索した．その結果，支台装置と義歯床のデジタル製作に関する研究成果を報告した．
デジタル技術を用いた臨床応用に対しては，まず通法では製作困難なグラスファイバー強化型レジンを用いた咬合挙上副子のデジタル製作を行った．また，デジタルワークフローで製作したパーシャルデンチャーの装着とトポロジー最適化によりデジタル製作したオーバーデンチャーの装着を試みた．この結果より，ジェネラティヴデザインとレーザー焼結積層造形を組み合わせたデジタルワークフローの臨床応用への道が開けた．
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