Crystallization of high-strength nano-scale leucite glass-ceramics

Bioactive and inert dental glass‐ceramics

“…These new glass‐ceramics had a higher mean bending strength than the competing commercial materials. The mean bending strengths were, for example, 255 ± 35 MPa for the nano‐leucite glass‐ceramic, 76 ± 7 MPa for Ceramco ® (restorative porcelain) and 166 ± 31 MPa for IPS Empress ® (Leucite GC) . More recently, Aurélio et al observed an increased bending strength and decreased surface roughness for a leucite‐based glass‐ceramic sintered at a higher sintering temperature after machining.…”

Effect of sandblasting, etching and resin bonding on the flexural strength/bonding of novel glass-ceramics

“…LG-C featured a higher BFS (mean (SD) =193.1 MPa (13.9)) than the strength range reported (75.7-165 MPa) for leucite glass-ceramics [10,11]. Optimisation of the powder processing and spray drying of the glass powder took advantage of surface crystallisation effects discussed previously [11].…”

“…Heat extrusion increases densification and is associated with higher flexural strength due to crystallite dispersion and a more homogeneous crystal distribution [8,9]. Typical properties are a reported KIC of 1.33 (0.08) MPa m 1/2 and flexural strengths in the range of 75.7-165 MPa [10,11]. Mackert et al [12] suggested that inherent flaws associated with the cubic to tetragonal transformation were reduced by synthesizing crystals in a critical size range (<4 µm).…”

Restorative nanomaterials in dentistry

“…Опубликованы исследования in vitro механических свойств экспериментальной стеклокерамики, состоящей из наночастиц лейцитов, для облицовки цельнокерамиче-ских каркасов [49,50]. Установлено, что наностеклокера-мика вызывает меньшее стирание эмали антагонистов, чем обычная облицовочная керамика (Ceramco-3); кроме того, наностеклокерамика продемонстрировала высокую прочность при нагрузках на изгиб.…”