Gyroid-based functionally graded porous titanium scaffolds for dental application: Design, simulation and characterizations

Wei Xu; Aihua Yu; Yu Jiang; Yageng Li; Ce Zhang; Harsh-preet Singh; Bowen Liu; Chenjin Hou; Yun Zhang; Shiwei Tian; Jiazhen Zhang; Xin Lu

Materials & Design (Dec 2022)

Gyroid-based functionally graded porous titanium scaffolds for dental application: Design, simulation and characterizations

Wei Xu,
Aihua Yu,
Yu Jiang,
Yageng Li,
Ce Zhang,
Harsh-preet Singh,
Bowen Liu,
Chenjin Hou,
Yun Zhang,
Shiwei Tian,
Jiazhen Zhang,
Xin Lu

Affiliations

Wei Xu: Shunde Graduate School, University of Science and Technology Beijing, Foshan 528399, China; State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China; National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China
Aihua Yu: Shunde Graduate School, University of Science and Technology Beijing, Foshan 528399, China; National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China
Yu Jiang: Peking University Third Hospital, Department of Orthopaedics, Engineering Research Center of Bone and Joint Precision Medicine, Beijing Key Laboratory of Spinal Disease Research, Beijing 100191, China
Yageng Li: Shunde Graduate School, University of Science and Technology Beijing, Foshan 528399, China; Beijing Advanced Innovation Center for Materials Genome Engineering, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China; Corresponding authors at: Shunde Graduate School, University of Science and Technology Beijing, Foshan 528399, China.
Ce Zhang: Shunde Graduate School, University of Science and Technology Beijing, Foshan 528399, China; National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China
Harsh-preet Singh: Department of Chemical and Materials Engineering, University of Auckland, Auckland 1142, New Zealand
Bowen Liu: Shunde Graduate School, University of Science and Technology Beijing, Foshan 528399, China; National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China
Chenjin Hou: Shunde Graduate School, University of Science and Technology Beijing, Foshan 528399, China; National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China
Yun Zhang: National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China
Shiwei Tian: National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China
Jiazhen Zhang: National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China
Xin Lu: Shunde Graduate School, University of Science and Technology Beijing, Foshan 528399, China; National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing, Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 100083, China; Corresponding authors at: Shunde Graduate School, University of Science and Technology Beijing, Foshan 528399, China.

Journal volume & issue: Vol. 224
p. 111300

Abstract

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To improve the mechanical compatibility and biocompatibility of porous scaffolds for dental application, functionally graded porous titanium scaffolds with average porosity of 20–80 % were designed and fabricated by selective laser melting. Finite element modeling in the oral environment showed that the maximum von-Mises strains of cortical and cancellous bone around graded scaffolds with 20–50 % porosities were in the range of 100–3000 με and 1000–3000 με, respectively, which is beneficial for bone regeneration. Additionally, the graded scaffolds exhibited higher compressive yield strength (206.1–477.5 MPa) yet suitable elastic modulus (8.5–20.7 GPa) compared with human cortical bone. Permeability of graded scaffolds increased with increasing porosity that all fall in the range of the permeability for human bone. Corrosion rate of graded scaffolds with 20–40 % porosity satisfied the corrosion resistance for metallic implants (2.5 × 10−4/mm/yr). Moreover, the graded scaffolds with 20–40 % porosity exhibited 0-I grade toxic effects on mouse embryonic osteoblast precursor cell proliferation in vitro. Taken together, the graded scaffold with 30 % porosity meets all requirements as a promising dental implant. In addition, this study provided a rational approach for screening the best geometrical design of the implants in dentistry.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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