Published June 30, 2020 | Version 1
Journal article Open

Sr-doped bioactive glasses for biological applications

Creators

  • 1. Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran
  • 2. Department of Biology, Shahid Chamran University, Ahvaz, Iran
  • 3. Department of Mining and Metallurgical Engineering, Yazd University, Yazd, Iran
  • 4. Department of Chemistry, Science and Research Branch, IAU, Tehran, Iran
  • 5. Department of dentistry, Isfahan (khorasgan) Branch , Islamic Azad University, Isfahan, Iran

Contributors

  • 1. School of Science and Technology, The University of Georgia, Tbilisi, Georgia
  • 2. Department of Materials and Metallurgical Engineering, Amirkabir University of Technology, Tehran, Iran

Description

In this work, sol–gel derived bioactive glasses (BGs) system of 60% SiO2-(36-x) CaO-4P2O5-x SrO (where x = 2, 4, 6 and 8 mol%) were obtained. The bioactivity and proliferation of G292 cells was investigated for Sr-containing BGs. X-ray diffraction analysis (XRD), Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were utilized to study the obtained phases, hydroxyapatite (HA) morphology, and its functional groups, respectively. The XRD and FTIR tests showed that the rate of hydroxyapatite formation on sample 2S was higher than that of other samples. Also 3-(4,5 dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay performed after one day revealed that the sample containing 6 mol% of Sr (6S) showed higher viability. However, the sample with 8 mol% Sr (8S) showed a decrease in bioactivity in osteoblast G292 cells proliferation. According to the results, 6S BG specimen with 6 mol% SrO exhibited appropriate bioactivity and cell proliferation. This finding showed that the obtained BGs could be potentially used for drug delivery systems as well as dental and orthopedic applications.

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