Dissolution behavior and cell compatibility of alkali-free MgO-CaO-SrO-TiO2-P2O5 glasses for biomedical applications

Sungho Lee 1 , Akiko Obata 1 , Delia S. Brauer 2 ,  and Toshihiro Kasuga 1
  • 1 Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokisocho, Showa-ku, Nagoya 466-8555, Japan
  • 2 Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Fraunhoferstr. 6, 07743 Jena, Germany

Abstract

Owing to their controlled solubility, phosphate invert glasses are of interest for use as temporary implant materials or tissue engineering scaffolds for controlled ion release.MgO-CaO-SrO-TiO2-P2O5 invert glasses were prepared and their dissolution behavior and cell response were examined.MgO addition to the phosphate invert glass system improved glass formation, owing to the relatively large field strength of Mg2+ ions. In osteoblastlike MC3T3-E1 cell culture tests, cell numbers on the invert glasses were significantly larger compared with the control, possibly caused by the release of Mg2+ ions promoting enhanced cell adhesion and proliferation. Alkaline phosphatase (ALP) activity varied with glass composition, with higher strontium for calcium substitution (33 to 100%) showing highest ALP activity. This effect may be caused by the release of strontium ions from the glasses.

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Biomedical Glasses is an international open access journal covering the field of glasses for biomedical applications. The aim of the journal is to provide a peer-reviewed forum for the publication of original research reports and authoritative review articles related to the development of biomedical glasses and their use in clinical applications.

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