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The Effect of the Nano- Bioglass Reinforcement on Magnesium Based Composite Publisher Pubmed



Khodaei M1 ; Nejatidanesh F2 ; Shirani MJ3 ; Valanezhad A4 ; Watanabe I4 ; Savabi O5
Authors
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Authors Affiliations
  1. 1. Department of Materials Science and Engineering, Golpayegan University of Technology, Golpayegan, Iran
  2. 2. Dental Materials Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, 81746-73461, Iran
  3. 3. Post graduate student of Prosthodontics, Student Research Committee, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
  4. 4. Department of Dental and Biomedical Materials Science, Nagasaki University, Nagasaki, Japan
  5. 5. Dental Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran

Source: Journal of the Mechanical Behavior of Biomedical Materials Published:2019


Abstract

Nano-bioceramic particles serving as a reinforcement can improve the mechanical and biological properties of magnesium implants, but they might have some side effects, that must be addressed. In this research, magnesium composites including 10 wt% nano-bioglass (nBG) were fabricated using powder metallurgy (PM10) and spark plasma sintering (SPS10) methods for bone reconstruction purposes. The results of the compression test indicated that the SPS10 sample had higher mechanical properties, in comparison to the PM10 sample, and nBG had more reinforcing effect on the mechanical properties of magnesium matrix. X-ray difractometery indicated that nBG was chemically reacted with magnesium in the PM10 sample, and resulted in some extra phases (MgO and Mg2Si) formation, while there was no detectable extra phases in the SPS10 sample. However, a higher in vitro degradation rate was observed for PM10 sample, because of multi-phase formation at the magnesium matrix. To inhibit the chemical reaction between magnesium and nBG kinetically, a short time sintering process can be, therefore, recommended. © 2019 Elsevier Ltd
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