Sintering of dental ceramic/sol–gel-derived bioactive glass mixtures for dental applications: the study of microstructural, biological, and thermal properties
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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.
KeywordsDental 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.
- 1.Sakaguchi RL, Powers JM (2012) Craig’s restorative dental materials. Elsevier, PhiladelphiaGoogle Scholar
- 5.Abbasi Z, Bahrololoom ME, Shariat MH, Bagheri R (2015) Bioactive glasses in dentistry: a review. J Dent Biomater 2:1–9Google Scholar
- 7.Hench LL, LaTorre GP (1993) The reaction kinetics of bioactive ceramics, part IV: effect of glass and solution composition. Bioceramics 5:67–74Google Scholar
- 11.Goudouri OM, Kontonasaki E, Theocharidou A, Kantiranis N, Chatzistavrou X, Koidis P, Paraskevopoulos K (2011) Dental ceramics/bioactive glass composites: characterization and mechanical properties investigation. Bioceram Dev Appl 1:1–4Google Scholar
- 14.Goudouri OM, Kontonasaki E, Papadopoulou L, Kantiranis N, Lazaridis NK, Chrissafis K, Chatzistavrou X, Koidis P, Paraskevopoulos K (2014) Towards the synthesis of an experimental bioactive dental ceramic. Part I: crystallinity characterization and bioactive behaviour evaluation. Mater Chem Phys 145:125–134CrossRefGoogle Scholar
- 17.Papadopoulou L, Kontonasaki E, Zorba T, Chatzistavrou X, Pavlidou E, Paraskevopoulos K, Sklavounos S, Koidis P (2003) Dental ceramics coated with bioactive glass: surface changes after exposure in a simulated body fluid under static and dynamic conditions. Phys Status Solidi A 198:65–75CrossRefGoogle Scholar
- 24.Hench L, Anderson O (1993) Bioactive Glasses. In: Hench LL, Wilson J (eds) An introduction to bioceramics, World Scientific Publications, SingaporeGoogle Scholar