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Materials 2019, 12(5), 834; https://doi.org/10.3390/ma12050834

Prefabricated and Self-Setting Cement Laminates

1
Department for Functional Materials in Medicine and Dentistry, University Hospital Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
2
Department of Oral & Maxillofacial Plastic Surgery, University Hospital Würzburg, Pleicherwall 2, 97070 Würzburg, Germany
3
INNOTERE GmbH, Meissner Strasse 191, 01445 Radebeul, Germany
*
Author to whom correspondence should be addressed.
Received: 9 January 2019 / Revised: 19 February 2019 / Accepted: 8 March 2019 / Published: 12 March 2019
(This article belongs to the Special Issue Mineral Bone Cements: Current Status and Future Prospects)
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Abstract

Polycaprolactone (PCL) fiber mats with defined pore architecture were shown to provide sufficient support for a premixed calcium phosphate cement (CPC) paste to serve as a flat and flexible composite material for the potential application in 2-dimensional, curved cranial defects. Fiber mats were fabricated by either melt electrospinning writing (MEW) or solution electrospinning (SES) with a patterned collector. While MEW processed fiber mats led to a deterioration of the cement bending strength by approximately 50%, due to a low fiber volume content in conjunction with a weak fiber-matrix interface, fiber mats obtained by solution electrospinning resulted in a mechanical reinforcement of the cement matrix in terms of both bending strength and absorbed fracture energy. This was attributed to a higher fiber volume content and a large contact area between nanosized fibers and cement matrix. Hydrophilization of the PCL scaffolds prior to lamination further improved composite strength and preserved the comparably higher fracture energy of 1.5 to 2.0 mJ/mm2. The laminate composite approach from this study was successful in demonstrating the limitations and design options of such novel composite materials. However, fiber-cement compatibility remains an issue to be addressed, since a high degree of hydrophilicity does not necessarily provoke a stronger interface. View Full-Text
Keywords: calcium phosphate cement; prefabricated paste; electrospinning, laminate calcium phosphate cement; prefabricated paste; electrospinning, laminate
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Brückner, T.; Fuchs, A.; Wistlich, L.; Hoess, A.; Nies, B.; Gbureck, U. Prefabricated and Self-Setting Cement Laminates. Materials 2019, 12, 834.

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