Additive manufacturing of multi-morphology graded titanium scaffolds for bone implant applications

Yu, Aihua; Zhang, Ce; Xu, Wei; Zhang, Yun; Tian, Shiwei; Liu, Bowen; Zhang, Jiazhen; He, Anrui; Su, Bo; Lu, Xin

doi:10.1016/j.jmst.2022.07.035

Cited by 30 publications

(6 citation statements)

References 60 publications

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“…The inclusion of TPMS scaffolds in biomimetic designs received a plethora of attention as a result of their topological smoothness, geometrical continuity, and a balance between mechanical functionality and mass transport properties that are in synergy with human bone. [108][109][110] Yang et al [111] proposed mathematical models to hybridize the design of TPMS scaffolds for biomimetic design purposes. The simplest model utilizes a sigmoid function (SF) to impose smooth and continuous transition at the intersection between two morphologies.…”

Section: Hybridization Of Tpms Structuresmentioning

confidence: 99%

“…The hybrid latticed beams enhanced the flexural stiffness of the uniform latticed beams at the cost of deteriorating strength and toughness. The results suggest the need for exploring novel types of hybridization strategies that yield enhanced stiffness, strength, and toughness properties Yu et al [108] introduced multimorphology radially graded scaffolds hybridized by primitive and gyroid structures at variant porosities (50%, 60%, 70%) denoted as PG50, PG60, and PG70, respectively (Figure 4d). Note that porosity is defined as p ¼ 1 À ρ r , where ρ r is the relative density.…”

Section: Hybridization Of Tpms Structuresmentioning

confidence: 99%

Section: Design and Performance Optimizationmentioning

confidence: 99%

“…Yu et al [ 108 ] introduced multimorphology radially graded scaffolds hybridized by primitive and gyroid structures at variant porosities (50%, 60%, 70%) denoted as PG50, PG60, and PG70, respectively (Figure 4d). Note that porosity is defined as

p = 1 - \left(\rho\right)_{r}

, where

\left(\rho\right)_{r}

is the relative density.…”

Section: Design and Performance Optimizationmentioning

confidence: 99%

mentioning

confidence: 99%

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Recent Advancements in Design Optimization of Lattice‐Structured Materials

et al. 2023

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Metamaterials, also known as lattice‐structured materials, imitate the multifunctionality of natural architects as tailoring their physical properties is associated with manipulating their microstructure. As the recent evolution of additive manufacturing enables the creation of intricate geometries with minimal material wastage, improving the design to manufacturing cycle of lattice structured materials has become one of the trending research areas. Triply periodic minimal surface (TPMS) and plate lattice materials are renowned for their exceptional mechanical behavior in lightweight applications. Apparently, several types of design optimization strategies are explored to maximize their performance for better biocompatibility and mechanical loading resistance. Some of these strategies include functional gradation and multimorphology hybridization that are comprehensively described in this review. Their benefits and drawbacks are highlighted with a focus on TPMS and plate lattice materials. The review anticipates the utilization of automated design exploration methods (i.e., topology optimization and data‐driven methods) to further enhance the design optimization procedure of lattice structured materials.

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Section: Hybridization Of Tpms Structuresmentioning

confidence: 99%

Section: Hybridization Of Tpms Structuresmentioning

confidence: 99%

Section: Design and Performance Optimizationmentioning

confidence: 99%

p = 1 - \left(\rho\right)_{r}

, where

\left(\rho\right)_{r}

is the relative density.…”

Section: Design and Performance Optimizationmentioning

confidence: 99%

mentioning

confidence: 99%

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Recent Advancements in Design Optimization of Lattice‐Structured Materials

et al. 2023

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Surface Modification of Porous Titanium and Titanium Alloy Implants Manufactured by Selective Laser Melting: A Review

Liu,

Li,

Wang

et al. 2023

Adv Eng Mater

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Titanium (Ti) and its alloy implants with porous structure manufactured by selective laser melting (SLM) can match elastic modulus of human bone to reduce the stress‐shielding effect and satisfy the personalized requirement in orthopedic surgery. Compared with conventional casting and forging Ti and its alloy implants, SLM implants possess unique microstructural features and excellent comprehensive mechanical properties. However, the un‐melted powder particles inevitably adhere to the surfaces of SLM implants, which may result in excessive surface roughness and potential health risks. Moreover, there are significant issues encountered, such as bioactivity, toxicity, antibacterial activity, corrosion and wear resistance. Consequently, surface modification methods are essential to remove the un‐melted powder particles and improve biological and mechanical properties of SLM implants. Herein, the research efforts focus exclusively on chemical (acid treatment, alkali treatment, sol‐gel, chemical vapor deposition and atomic layer deposition) and electrochemical methods (anodization and microarc oxidation) for SLM Ti and its alloy implants, especially for porous structures. Particularly, the characteristics of these methods are summarized, and their commonly used pre‐ and post‐treatment methods are introduced. In addition, the development trends and challenges in surface modification of SLM Ti and its alloy implants are discussed.This article is protected by copyright. All rights reserved.

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Review of 3D‐Printed Titanium‐Based Implants: Materials and Post‐Processing

Li,

Wang

2024

ChemBioEng Reviews

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Implants are essential in medical treatments, as they offer restored function, quality of life enhancement, and long‐term solutions. The global demand for implants is increasing due to the aging population, medical innovation, and improved medical payment capacity. 3D printing, also known as additive manufacturing, has revolutionized the fabrication of implants due to its ability to produce complex geometries and customizable designs. The superior biocompatibility, corrosion resistance, and mechanical properties of titanium (Ti) and its alloys make them ideal and common for orthopedic and dental implants. Materials are the basis of 3D‐printed implants. Ti‐based materials for 3D printing are summarized, including commercial pure titanium, binary Ti alloys, ternary Ti alloys, quaternary Ti alloys, and multicomponent Ti alloys. Post‐processing is necessary to ensure the desired performance of 3D‐printed implants. Post‐processing methods for 3D‐printed implants are reviewed from the perspective of improving the performance of the mechanical property, osseointegrative property, antibacterial property, and multiple properties. In this review, the published literatures related to the materials and post‐processing of 3D‐printed Ti‐based implants are collected and discussed. The current challenges and future trends are also analyzed. It is expected to provide a basis for the application of 3D‐printed Ti‐based implants.

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Additive manufacturing of multi-morphology graded titanium scaffolds for bone implant applications

Cited by 30 publications

References 60 publications

Recent Advancements in Design Optimization of Lattice‐Structured Materials

Recent Advancements in Design Optimization of Lattice‐Structured Materials

Surface Modification of Porous Titanium and Titanium Alloy Implants Manufactured by Selective Laser Melting: A Review

Review of 3D‐Printed Titanium‐Based Implants: Materials and Post‐Processing

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