Fabrication and mechanical properties of biomimetic nacre-like ceramic/polymer composites for chairside CAD/CAM dental restorations
| Autor: | Bo Su, Dongsheng Zhang, Hongbo Wan, Anthony J Ireland, Sana W A R Algharaibeh, Rami Al-Fodeh |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Ceramics
Fabrication Materials science Dental materials Polymers Composite number Composite CAD/CAM Flexural strength Fracture toughness Biomimetics Materials Testing General Materials Science Ceramic Composite material Nacre Polymer General Dentistry chemistry.chemical_classification Nacre-like Brick and mortar microstructure UDMA chemistry Mechanics of Materials visual_art Volume fraction visual_art.visual_art_medium Computer-Aided Design Biomimetic |
| Zdroj: | Algharaibeh, S W A R, Wan, H, Al-Fodeh, R, Ireland, A J, Zhang, D & Su, B 2022, ' Fabrication and mechanical properties of biomimetic nacre-like ceramic/polymer composites for chairside CAD/CAM dental restorations ', Dental Materials, vol. 38, no. 1, pp. 121-132 . https://doi.org/10.1016/j.dental.2021.10.016 |
| Popis: | ObjectiveTo fabricate and characterise a novel chairside CAD/CAM composite dental materials. These composites have a nacre-like anisotropic microstructure, consisting of highly aligned ceramic scaffolds infiltrated with polymer.MethodBi-directional freeze casting of alumina ceramic suspension was used to fabricate highly aligned ceramic scaffolds that were subsequently uniaxially pressed to control the ceramic volume fraction and then infiltrated with UDMA/TEGDMA polymer. The produced composites were subjected to mechanical testing, namely three-point bending, hardness and fracture toughness tests.ResultsNovel biomimetic ceramic/polymer composites (BCPCs) were fabricated with nacre-like brick and mortar anisotropic microstructure. The mechanical properties were dependent on the ceramic volume fraction. The 70 vol% BCPC had sufficient flexural strength (135.08–145.77 MPa), stiffness (57.75–61.22 GPa) and hardness (3.07–3.36 GPa) and showed remarkable fracture resistance with KIC value of (2.54 MPa m1/2).SignificantNovel biomimetic ceramic/polymer composites show great potential as the next generation of CAD/CAM dental materials, as they closely resemble the combined mechanical properties of dentine and enamel. |
| Databáze: | OpenAIRE |
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