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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Oliveira, Antonio P. Novaes De
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Topics
Publications (7/7 displayed)
- 2020PEEK-matrix composites containing different content of natural silica fibers or particulate lithium‑zirconium silicate glass fillerscitations
- 2020Micro-scale abrasion and sliding wear of zirconium-lithium silicate glass-ceramic and polymer-infiltrated ceramic network used in dentistrycitations
- 2020Wear behavior of dental glass-ceramicscitations
- 2019Micro-scale abrasion wear of novel biomedical PEEK-matrix composites for restorative dentistrycitations
- 2018Mechanical integrity of cement- and screw-retained zirconium-lithium silicate glass-ceramic crowns to Morse taper implantscitations
- 2018Lithium-zirconium silicate glass-ceramics for restorative dentistrycitations
- 2017Physicochemical and biological assessment of PEEK composites embedding natural amorphous silica fibers for biomedical applicationscitations
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article
Lithium-zirconium silicate glass-ceramics for restorative dentistry
Abstract
<p>The main aim of this study was to evaluate the physicochemical and biological behavior of (LZS) lithium-zirconium and (LZSA) lithium-zirconium-alumina silicate glass-ceramics. LZS and LZSA silicate glass-ceramics were produced from commercial raw materials by melting (1550 °C/2 h) followed by water-cooling casting. The obtained glass frits were milled by a two-step process (dry and wet milling) up to achieve 5–10 μm particles. The milled powder was uniaxially pressed (50 MPa) and later fired at 900 °C/2 h (LZS) and at 850 °C/2 h (LZSA). Specimens were characterized by physical, chemical, thermal, and cell culture assays. Crystalline phases such ZrSiO<sub>4</sub> and residual quartz and lithium metasilicate (Li<sub>2</sub>SiO<sub>3</sub>) was found in the LZS group microstructure while LZSA showed a mixture of ZrSiO<sub>4</sub> and β-spodumene (LiAlSi<sub>2</sub>O<sub>6</sub>). Materials showed different thermal behavior and mechanical properties. LZS silicate glass ceramics revealed higher fracture toughness and Young's modulus values than those recorded for LZSA silicate glass-ceramics. A higher percentage of osteoblast cell proliferation and mineralization was detected on LZS surfaces when compared to LZSA surfaces. The chemical composition, microstructure, thermal behavior, and mechanical strength of LZS and LZSA silicate glass-ceramic can be adjusted for manufacturing of prosthetic structures for oral rehabilitation. Also, the interaction of glass-ceramics with human cells and tissues can be enhanced by increasing the content of bioactive ceramic materials such as silica or by adding additional bioactive compounds such as beta-tricalcium phosphate.</p>