Journal of Sol-Gel Science and Technology

, Volume 81, Issue 2, pp 523–533 | Cite as

Sintering of dental ceramic/sol–gel-derived bioactive glass mixtures for dental applications: the study of microstructural, biological, and thermal properties

  • Zahra Abbasi
  • M. Ebrahim Bahrololoom
  • Rafat Bagheri
  • Mohammad H. Shariat
Original Paper: Sol-gel and hybrid materials for biological and health (medical) applications


Although dental ceramic restorations are biocompatible, they are not necessarily bioactive. They can be modified by bioactive glasses to exhibit bioactive behavior well adapted to the surrounded tissue. Such modification can be done using mixtures of dental ceramic/sol–gel-derived bioactive glass expected to prolong the life time of the fixed dental prosthesis by preventing the formation of secondary caries. In the current study, these mixtures with different compositions were sintered in the laboratory in order to simulate the oral condition in which the restoration is used. Biological behavior was evaluated by immersion of the specimens in simulated body fluid. The microstructural and thermal properties of the sintered specimens were studied using X-ray diffractometry, Fourier transform infrared spectroscopy, field emission scanning electron microscopy/energy dispersive spectroscopy and dilatometry. One of the mixtures was used as a layering material on the dental ceramic, and its attachment to the substrate, fracture surface, micro-hardness, and bioactivity behavior was evaluated. Sintering enhanced the crystallinity of the mixtures and they exhibited a good bioactive behavior. In addition, applying one of the mixtures as coating on ceramic substrate was a successful process in which the product revealed acceptable properties.


Dental ceramic Bioactive glass Sol–gel Bioactive behavior 



The authors would like to thank Mr. M. Sorayaneshan (Sorayaneshan Dental Lab., Shiraz, Iran) for his assistance with specimen preparation and Dr. Tony Clayton (SDI, Victoria, Australia) for his assistance with the FTIR analysis.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Zahra Abbasi
    • 1
  • M. Ebrahim Bahrololoom
    • 1
  • Rafat Bagheri
    • 2
  • Mohammad H. Shariat
    • 1
  1. 1.Materials Science and Engineering Department, School of EngineeringShiraz UniversityShirazIran
  2. 2.Dental Materials Department and Biomaterials Research Centre, School of DentistryShiraz University of Medical SciencesShirazIran

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