Evaluation of the mechanical properties and fit of 3D-printed polyetheretherketone removable partial dentures
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- GUO Fang
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Xi’an Medical University
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- HUANG Shuo
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Xi’an Medical University
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- LIU Ning
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Xi’an Medical University
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- HU Min
- Department of Oral and Maxillofacial Surgery, General Hospital of PLA
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- SHI Changquan
- State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiao tong University
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- LI Dichen
- State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiao tong University
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- LIU Changkui
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Xi’an Medical University
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説明
<p>Compared with CAD/CAM, fused deposition modeling (FDM) 3D printing technology is simple and safe to operate and has a low cost and high material utilization rate; thus, it is widely used. The present investigation aimed to evaluate the mechanical properties and fit of polyetheretherketone (PEEK) removable partial dentures (RPDs) constructed by FDM. We analyzed mechanical properties of PEEK samples prepared by FDM, milling, or injection molding. RPDs were designed and finite element analysis models was constructed to evaluate maximum stress and strain in the RPDs, cortical bone and mucosa. Geomagic Qualify software was used to analyze gaps between the model and the tissue surface of the framework. The results showed that the compressive strength of the 3D-printed PRDs was greater than that of the injection-molded samples. Finite element analysis demonstrated that the maximum stress on the PRDs was less than the yield strength of the material. Overall, the mechanical properties and fit of the PEEK RPD fabricated by FDM technology essentially fulfilled clinical requirements.</p>
収録刊行物
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- Dental Materials Journal
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Dental Materials Journal 41 (6), 816-823, 2022-11-25
一般社団法人 日本歯科理工学会