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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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Chen, Xiaohui
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2022Effect of sandblasting with fluorapatite glass-ceramic powder and chemical primers/adhesives on shear bond strength of indirect repairing composite to zirconiacitations
- 2020Fluorapatite Glass-Ceramics: A New Sandblasting Approach for Zirconia Repair
- 2019Preliminary study of hydroxyapatite particles air abrasive blasting on Mg-4Zn-0.3Ca surfacecitations
- 2016Design and Synthesis of New Translucent, High Strength Leucite Glass-Ceramics
- 2016Surface properties of tricalcium phosphate and hydroxyapatite resin composites
- 2014Leucite Glass Ceramics
- 2014The Retarding Effect of Zinc Oxide on Dissolution and Apatite Formation of a Fluoride Containing Bioactive Glass
- 2014'Smart' acid-degradable zinc-releasing silicate glassescitations
- 2014Low-sodium Bioactive Glass Coatings for Titanium Implants by Grit Blasting
- 2013Remineralisation Study of a Nano-sized Hydroxyapatite and Fluoride Containing Toothpaste
- 2013Reduced wear of enamel with novel fine and nano-scale leucite glass-ceramicscitations
- 2013Crystallization of high-strength nano-scale leucite glass-ceramicscitations
- 2012Wear characteristics of fine and nano-scale high-strength leucite glass-ceramics
- 2011Crystallization and flexural strength optimization of fine-grained leucite glass-ceramics for dentistrycitations
- 2010Development and testing of multi-phase glazes for adhesive bonding to zirconia substrates
- 2010Crystallization of high-strength fine-sized leucite glass-ceramicscitations
- 2010Synthesis of nano-sized Leucite Glass-ceramics
- 2010Wear Characteristics of an Experimental High-Strength Fine-Sized Leucite Glass-Ceramic
- 2010Optimization of Novel Leucite Glass-ceramics
- 2009Effect of Glass Powder Size on Leucite Glass-Ceramic Crystallisation
- 2009Control of ceramic microstructure
- 2007Microstructure and Thermal Expansion Properties of Some Leucite Glass-Ceramics
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conferencepaper
Surface properties of tricalcium phosphate and hydroxyapatite resin composites
Abstract
Objectives: The objectives of the present study were to formulate tricalcium phosphate and hydroxyapatite UDMA-based resin composites and characterise their surface properties: hardness, gloss and roughness.Methods: β-Tricalcium phosphate (β-TCP) and 3 HAP were used as reinforcing phases. The morphology and size of the particles were studied by scanning Electron Microscopy and laser diffraction. Five UDMA-based resin composites with increasing amount of particles (20-60 wt%) were formulated for each reinforcing phase with a photo-initiator system of CQ and DMAEM. Cylindrical specimens (2/6 mm x 2 mm) were light cured and the post-irradiance hardness immediate and 24 h after cured (VHN0 and VHN24) was measured (n=5). Specimens were subjected to simulated toothbrush abrasion study and the surface gloss and microroughness (Ra) were evaluated before and after the abrasion study. Difference between the results was analysed by one way (ANOVA) (P<0.05) followed by Tukey`s post hoc test.Results: Each reinforcing phases showed different morphology and particles size: β-TCP nanosized rod shape, HAP1 and HAP2 3-5 µm clusters with nano HAP crystals, HAP4 10 -100 µm spherical particles. All resin composites demonstrated an increase in VHN with increasing reinforcing phases and a significant increase (over 80%) was noticed for VHN24 compared with VHN0. Gloss decreased from around 60% to 30% and Ra increased with increasing reinforcing phase. A further decrease in gloss and an increase in Ra were observed for resin composites after been subjected to polishing and toothbrush; however different trends were noticed for different reinforcing phases.Conclusion: β-Tricalcium phosphate and HAP demonstrated potentials as reinforcing phases for esthetic dental resin composites. Correlations existed between the amounts of reinforcing phases and various surface properties (a positive correlation for hardness and roughness and inverse correlation for gloss).