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Principles for Evaluating the Efficacy and Safety of Ceramic Dental Implants in Japan.
Ther Innov Regul Sci
January 2025
Graduate School of Pharmaceutical Sciences, Osaka University, Osaka, 567-0871, Japan.
Recent progress in materials chemistry has resulted in the development of several ceramic materials that are now being used in dental implants. The advantages of ceramic materials over conventional metallic materials are that they do not induce allergic reactions in individuals with metal allergies, they do not interfere with magnetic resonance imaging, and they provide improved esthetics. In addition, some ceramic materials are tougher than metallic materials and less brittle.
View Article and Find Full Text PDFSupramolecular Ionogels Tougher than Metals.
Adv Mater
July 2023
Jiangsu Engineering Laboratory of Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies College of Chemistry, Suzhou Key Laboratory of Soft Material and New Energy, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.
Common natural and synthetic high-strength materials (such as rubber, plastics, ceramics, and metals) undergo the occurrence of poor deformability. Achieving high strength and large deformation simultaneously is a huge challenge. Herein, high-strength ionogels are developed through the synergy of force-induced crystallization and halometallate ionic liquid created supramolecular ionic networks.
View Article and Find Full Text PDFA Molecular-Scale Understanding of Misorientation Toughening in Corals and Seashells.
Adv Mater
July 2023
Department of Physics, University of Wisconsin, Madison, WI, 53706, USA.
Biominerals are organic-mineral composites formed by living organisms. They are the hardest and toughest tissues in those organisms, are often polycrystalline, and their mesostructure (which includes nano- and microscale crystallite size, shape, arrangement, and orientation) can vary dramatically. Marine biominerals may be aragonite, vaterite, or calcite, all calcium carbonate (CaCO ) polymorphs, differing in crystal structure.
View Article and Find Full Text PDFAligning curved stacking bands to simultaneously strengthen and toughen lamellar materials.
Mater Horiz
February 2023
MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China.
A layered architecture endows structural materials like nacre and biomimetic ceramics with enhanced mechanical performance because it introduces multiple strengthening and toughening mechanisms. Yet present studies predominantly involve enhancing the alignment in planar lamellar structures, and the effects of the stacking curvature have largely remained unexplored. Here we find that ordered curved stacking bands in lamellar structures act as a new structural mechanism to simultaneously improve strength and toughness.
View Article and Find Full Text PDFCyclic contact fatigue behavior of baria-silicate glass-ceramics as a function of crystal aspect ratio.
J Eur Ceram Soc
May 2022
Materials Science and Engineering Department, University of Florida, Gainesville, FL 32611, United States.
Ceramic materials are potentially useful for dental applications because of their esthetic potential and biocompatibility. However, evidence of contact fatigue damage in ceramics raises considerable concern regarding its effect on the survival probability predicted for dental prostheses. To simulate intraoral conditions, Hertzian indentation loading with steel indenters was applied in this study to characterize the fatigue failure mechanisms of ceramic materials.
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