Phase transformation and mechanical properties of new bioactive glass-ceramics derived from CaO-P2O5-Na2O-B2O3-SiO2 glass system

Loh ZW 1 , Mohd Zaid MH 2 , Matori KA 3 , Kechik MMA 1 , Fen YW 1 , Mayzan MZH 4 Show all authors , Liza S 5 , Cheong WM 1

Affiliations 

  • 1 Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
  • 2 Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; Nanomaterials Synthesis and Characterization Laboratory (NSCL), Institute of Nanoscience and Nanotechnology (ION2), Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia. Electronic address: mhmzaid@upm.edu.my
  • 3 Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia; Nanomaterials Synthesis and Characterization Laboratory (NSCL), Institute of Nanoscience and Nanotechnology (ION2), Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia
  • 4 Ceramic and Amorphous Group (CerAm), Faculty of Applied Sciences and Technology, Pagoh Higher Education Hub, Universiti Tun Hussein Onn Malaysia, 84600, Panchor, Johor, Malaysia
  • 5 TriPrem i-Kohza, Malaysia-Japan International Institute Technology, Universiti Teknologi Malaysia, 54100, Kuala Lumpur, Malaysia
J Mech Behav Biomed Mater, 2023 Jul;143:105889.
PMID: 37150138 DOI: 10.1016/j.jmbbm.2023.105889

Abstract

This work investigates the role of sintering temperature on bioactive glass-ceramics derived from the new composition CaO-P2O5-Na2O-B2O3-SiO2 glass system. The sintering behaviour of the samples' physical, structural, and mechanical properties is highlighted in this study. The experimental results indicated that the sintering process improved the crystallization and hardness of the final product. Results from XRD and FTIR showed the existence of carbonate apatite, pseudo-wollastonite, and wollastonite phases. From the results, the bioglass-ceramics sintered at 700 °C obtained the highest densification and optimum mechanical results. It had the value of 5.34 ± 0.21 GPa regarding microhardness and 2.99 ± 0.24 MPa m1/2 concerning fracture toughness, which falls in the range of the human enamel. Also, the sintered samples maintained their bioactivity and biodegradability after being tested in the PBS medium. The bioactivity does not affect but slows down the apatite formation rate. Overall results promoted the novel bioglass-ceramics as a candidate material for dental application.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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