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Post-printing surface modification and functionalization of 3D-printed biomedical device.

ABSTRACT: 3D printing is a technology well-suited for biomedical applications due to its ability to create highly complex and arbitrary structures from personalized designs with a fast turnaround. However, due to a limited selection of 3D-printable materials, the biofunctionality of many 3D-printed components has not been paid enough attention. In this perspective, we point out that post-3D printing modification is the solution that could close the gap between 3D printing technology and desired biomedical functions. We identify architectural reconfiguration and surface functionalization as the two main post-3D printing modification processes and discuss potential techniques for post-3D printing modification to achieve desired biofunctionality.

SUBMITTER: Zhang Y

PROVIDER: S-EPMC7575633 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Post-printing surface modification and functionalization of 3D-printed biomedical device.

Zhang Yi Y

International journal of bioprinting 20170606 2

3D printing is a technology well-suited for biomedical applications due to its ability to create highly complex and arbitrary structures from personalized designs with a fast turnaround. However, due to a limited selection of 3D-printable materials, the biofunctionality of many 3D-printed components has not been paid enough attention. In this perspective, we point out that post-3D printing modification is the solution that could close the gap between 3D printing technology and desired biomedical ...[more]

PMID: 33094185

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Project description:BackgroundThree-dimensional (3D) printing technology has been widely used in orthopedics; however, it is still limited to the change of macroscopic structures. In order to further improve the biological properties of 3D-printed porous titanium scaffolds, this study introduced micro-arc oxidation (MAO) technology to modify the surface of porous titanium scaffolds and construct bioactive coatings on the surface of porous titanium scaffolds to improve the biocompatibility and osseointegration ability of the material.MethodsFor in vitro experiments, human bone marrow stem cells (hBMSCs) were seeded onto untreated scaffolds (control group) and MAO-treated scaffolds (experimental group). After 24 h of co-culture, cytotoxicity was observed using live/dead staining, and cell/scaffold constructs were retrieved and processed for the assessment of cell morphology by using scanning electron microscopy (SEM). Cell proliferation was detected using the Cell Counting Kit-8 (CCK-8) assay after 3, 7, and 14 days of co-culture. The levels of alkaline phosphatase (ALP) in the cell supernatant were detected after 7 and 14 days of co-culture. For in vivo experiments, micro-computed tomography (micro-CT) and Masson Goldner's staining were used to evaluate bone ingrowth and osseointegration at 4 and 8 weeks postoperatively.ResultsIn vitro experiment results confirmed that the two groups of scaffolds were non-cytotoxic and the cell adhesion status on the MAO-treated scaffolds was better. Over time, cell proliferation and ALP levels were higher in the MAO-treated group than in the untreated scaffolds. In the in vivo experiments, the MAO-treated scaffolds showed better bone ingrowth and osseointegration than the untreated group at different time points.ConclusionsThe MAO-treated porous titanium scaffold formed a uniform and dense bioactive coating on the surface, which was more conducive to cell adhesion, proliferation, and differentiation and showed better osseointegration and bone ingrowth in vivo.

Dataset Information

Post-printing surface modification and functionalization of 3D-printed biomedical device.

Publications

Post-printing surface modification and functionalization of 3D-printed biomedical device.

Similar Datasets

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