NDLI: Surface micropatterning with zirconia and calcium phosphate ceramics by micromoulding in capillaries

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Journal of Materials Chemistry B Vol - 4 Issue - 5

Journal of Materials Chemistry B Vol -3

Journal of Materials Chemistry B Vol -2

Journal of Materials Chemistry B Vol -1

Surface micropatterning with zirconia and calcium phosphate ceramics by micromoulding in capillaries

Content Provider	Royal Society of Chemistry (RSC)
Author	Resmini, A. Blitterswijk, C. A. Barata, D. Elshof, J. E. ten Veldhuis, S. A. Habibovic, P. Pereira, D.
Copyright Year	2016
Abstract	An increasing demand exists for biomaterials that are able to actively participate in the process of repair and regeneration of damaged or diseased organs and tissues. Patterning of surfaces of biomaterials with distinct chemical or physical cues is an attractive way to obtain spatial control over their interactions with the biological system. In the current study, micromoulding in capillaries method was used to pattern silicon substrates with bioinert yttria-stabilised zirconia or with bioactive calcium phosphate ceramics, both widely used biomaterials in orthopaedics and dentistry. Micrometer-scale patterns consisted of parallel lines with varying width and spacing. Both ceramics were successfully deposited on the substrate in a pattern defined by the mould. While the yttria-stabilised zirconia pattern was highly homogenous and smooth (Rq = 5.5 nm), the calcium phosphate pattern, consisting of dicalcium phosphate anhydrous before, and of β-tricalcium phosphate after annealing, exhibited a less homogenous morphology and higher roughness (Rq = 893 nm). Both materials allowed attachment and proliferation of the MG-63 osteosarcoma cell line, independent of the pattern used. While a preferential orientation of cells in the direction of the pattern lines was observed for all patterns, this effect was more pronounced on the lines with a width of up to 20 μm on both yttria-stabilised zirconia and calcium phosphate ceramics, as compared to wider patterns. Furthermore, the cells retained an elongated morphology for a longer period of time on narrow patterns. Micromoulding in capillaries appeared to be a suitable method to pattern both types of ceramics, however further optimisation is needed to improve homogeneity and obtain better control over the chemical phase and crystalline structure of calcium phosphate patterns.
Starting Page	1044
Ending Page	1055
Page Count	12
File Format	HTM / HTML PDF
ISSN	2050750X
Volume Number	4
Issue Number	6
Journal	Journal of Materials Chemistry B
DOI	10.1039/c5tb02027a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Biomaterial Capillary Zirconium dioxide Calcium phosphate Orthopedic surgery Dentistry Dicalcium phosphate Phosphate Nucleic acid thermodynamics Track gauge Osteosarcoma Micrometre
Content Type	Text
Resource Type	Article
Subject	Chemistry Medicine Materials Science Biomedical Engineering

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