Abstract
Abstract Glass-infiltrated ceramic biocomposites have shown high strength and toughness, which results in long lifetime, but their translucency is relatively low, limiting the aesthetic quality of dental restorations. This study evaluated the effects of glass compositions based on the system SiO 2 -B 2 O 3 -Al 2 O 3 -La 2 O 3 -TiO 2 -CaO-CeO 2 , designed using SciGlass software, on the optical properties of alumina-based biocomposites. For (45-x)SiO 2 -xB 2 O 3 -25Al 2 O 3 -15La 2 O 3 -15TiO 2 glasses, the increase in B 2 O 3 content enhanced the infiltration of glass in the alumina preform because of the decrease in glass viscosity. The addition of CaO enhanced the infiltration depth and increased light transmittance of the biocomposite in the visible region (wavelength between 360 and 740 nm); however, the addition of CeO 2 significantly decreased the transmittance, particularly at the low wavelength range, because of the coloring effect (yellowish color due to the formation of cerium-titanium complexes). The highest transmittance was measured for biocomposites infiltrated with glass of composition 25% SiO 2 -20% B 2 O 3 -20% Al 2 O 3 -15% La 2 O 3 -15% TiO 2 -5% CaO (mol%).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.