Stress-driven design method for porous maxillofacial prosthesis based on triply periodic minimal surface

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-02-01 DOI:10.1016/j.compstruct.2025.118863

Jiasen Gu , Syed Mesum Raza Naqvi , Long Chao , Chen Jiao , Youwen Yang , Muhammad Ali Nasir , Zongjun Tian , Lida Shen , Dongsheng Wang , Huixin Liang

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引用次数: 0

Abstract

The human mandible exhibits significant variation among individuals, necessitating customised restoration. This study proposes a stress distribution-driven modelling algorithm for gradient triply periodic minimal surface (TPMS) structures, specifically Gyroid-type double TPMS (GTDT) structures. The design process determines stress distribution in the macroscopic repair region through finite element method (FEM) mechanical analysis. In addition, designed structures were fabricated using laser powder bed fusion (LPBF). FEM analysis, mechanical testing, permeability experiments, and in vitro experiments were performed and identified an optimal Iso Value of 1.25 for bone regeneration. The results showed that the structures produced by the stress-driven design method had higher yield strength and more uniform stress distribution and double the strength in three-point bending tests, all at comparable relative density. Compared to the solid structure, the customized prostheses designed for maxillofacial repairs using this method exhibit stress distribution and displacement behaviour more closely aligned with native bone during mastication, thereby enhancing post-operative comfort.

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.

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