Mechanical properties of homogeneous and gradient porosity Gyroid structures and porous implant additive manufacturing

doi:10.12337/zgkqzzxzz.2023.06.013

Chinese Journal of Oral Implantology ›› 2023, Vol. 28 ›› Issue (3): 204-209.DOI: 10.12337/zgkqzzxzz.2023.06.013

• Original Articles·Basic Research • Previous Articles Next Articles

Mechanical properties of homogeneous and gradient porosity Gyroid structures and porous implant additive manufacturing

Song Yihan^1,2, Zheng Xiaoxiao^1,2, Sun Zihui^1,2, Zhang Yan^1,2, Han Zekui^1,2, Su Yucheng^2,3,4, Wang Xinyu^1,2

¹Jiamusi University, Jiamusi 154007,China;
²School of Stomatology, Jiamusi University, Key Laboratory of Oral Biomaterials and Clinical Applications of Heilongjiang Province, Stomatology Engineering Experimental Center of Jiamusi University, Jiamusi 154004,China;
³Beijing Citident Hospital of Stomatology, Beijing Implant Training College(BITC), Beijing 100032, China;
⁴Dental Implant Center, Peking Union Medica College Hospital, Chinese Academy of Medical Sciences, Beijing 100032, China

Received:2023-02-27 Online:2023-06-30 Published:2023-07-04
Contact: Wang Xinyu, Email: wangxinyu@jmsu.edu.cn, Tel:0086-454-8625654
Supported by:
Basic Scientific Research Operation Fund Project of Heilongjiang Provincial Education Department（2022-KYYWF-0645）

Abstract

Abstract: Objective To study the mechanical properties of Gyroid structures with different porosity and gradient porosity, and to design and prepare a new type of porous implant. Methods Gyroid structure models with homogeneous porosity of 60%, 65%, 70%, 75%, 80% and 60%~80% gradient were established by MSLattice and Magics software. The mechanical properties of Gyroid structures with different porosity were compared by finite element analysis and mechanical compression test respectively. A new porous implant was designed and fabricated by selective laser melting (SLM). Results As the porosity increases, the elastic modulus and compressive strength of the Gyroid structure decreased. At the same porosity, the differences in the elastic modulus of the Gyroid structures were not statistically significant (P>0.05), and the maximum compressive strengths of the gradient Gyroid structures were lower than those of the homogeneous porosity Gyroid structures. Conclusion The gradient Gyroid structure matches the elastic modulus of cortical bone and cancellous bone, and the strength is similar to that of human bone, which has excellent mechanical properties and is expected to be used in dental implants.

Key words: Gyroid structure, 3D printing, Porous implant, Selective laser melting

Song Yihan, Zheng Xiaoxiao, Sun Zihui, Zhang Yan, Han Zekui, Su Yucheng, Wang Xinyu. Mechanical properties of homogeneous and gradient porosity Gyroid structures and porous implant additive manufacturing[J]. Chinese Journal of Oral Implantology, 2023, 28(3): 204-209.

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Mechanical properties of homogeneous and gradient porosity Gyroid structures and porous implant additive manufacturing

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