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  • A novel polymer infiltrated ceramic dental material ...

    2011-6-1 · Results. The polymer infiltrated ceramic material has elastic modulus, hardness, and fracture toughness values of 30.14 GPa, 2.59 GPa, and 1.72 MPa m 1/2, respectively. The material illustrates a significant indentation size effect for elastic modulus and hardness, and has similar indentation creep behavior to human enamel.

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  • Morphology and structure of polymer layers

    2012-10-1 · In our previous study, we showed that the treatment of human dental enamel with polymer modified citric acid solutions (PMCASs) led to reduced softening of the enamel surfaces compared to samples treated with unmodified CAS . In addition, we presented qualitative evidence that the polymers interact with the hydroxyapatite of the human dental enamel and build up a protective layer on the enamel …

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  • A novel polymer infiltrated ceramic for dental

    2011-5-26 · Results. A phantom tooth has a nanoindentation determined E and H of 9.62 ± 1.79 and 0.63 ± 0.07 GPa, respectively, while polymer infiltrated ceramic has E and H of 30.14 ± 2.96 and 2.36 ± 0.57 GPa, respectively, which are approximately three times higher.

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  • Investigation on the Gradient Nanomechanical Behavior

    inner layers of normal tooth enamel, mild dental fluorosis enamel, and severe dental fluorosis enamel were tested by nanoindentation under an applied load of 2000 μN and holding time of 30 s.

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  • Dental Consumables - HENAN BAISTRA INDUSTRIES

    Dental Turbine; Others General Dental Equipment; Dental Materials. Synthetic Polymer Resin Teeth; Absorbent Paper Points; Face Mask; Dental Consumables; Hygiene Products; Others Dental Materials; Cleaning Appliances. Ultrasonic cleaner; Others Cleaning Appliances; Universal Medical & Diagnostic Implement. Protective Products; Others Universal Medical & Diagnostic Implement

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  • Elastic modulus and stress–strain response of human

    Nano-indentation with a sharp (Berkovich) and two spherical indenters with nominal tip radii of 5 and 20 μm was used to determine the elastic modulus and stress–strain response of human enamel. Indentation tests were made over a wide range of peak loads from 1 to 450 mN in two orthogonal directions, i.e., parallel and perpendicular to enamel prisms. The elastic modulus and hardness (mean contact …

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  • Dental Biomaterials | ScienceDirect

    This chapter discusses the current status regarding bonding of dental adhesives to enamel and dentine. In regard to the actual bonding effectiveness, it is now very clear that an adhesive's in vitro and in vivo performance greatly depends on its specific ingredient composition and this is especially so for the more recent one-step self-etch adhesives. In spite of the improved ease-of-use and faster application, a …

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  • Nano-modification of Building Materials for Sustainable ...

    is a dispersion of organic plastic polymer particles in which nanoscale particles of silica are incorporated directly during the synthesis of the organic polymer. This

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  • Effects of Different pH Conditions on Enamel Erosion ...

    2016-8-24 · 2.1. Materials The n-FA with a size of approximately 40 nm was syn-thesized in the laboratory. Briefly, solution A was made by adding 23.6 g analytical grade Ca(NO 3 2 into 200 mL of analytical grade N, N-dimethylacetamide under stir-ring condition. Solution B was made by dissolving 0.74 g analytical grade NaF and 7.9 g (NH 4 2 HPO 4 in 2000 mL deionized water.

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  • Dental Bonding - an overview | ScienceDirect Topics

    2020-8-11 · Most non-metallic items in the sports industry, such as golf clubs and poles for vaulting, are made of high-performance fiber-reinforced materials. Historically, the dental bonding revolution began in 1955 when Dr. Michael Buonocore published his paper “A Simple Method of Increasing the Adhesion of Acrylic Materials to Enamel Surfaces.” A second significant advancement occurred in 1962 with Dr …

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  • Fabrication of enamel-like structure on polymer ...

    After polymer infiltration, an enamel-like structure was obtained on zirconia-based PICN materials. ... The modulus of elasticity and nano-hardness of the regenerated enamel prism-like tissue were ...

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  • Fabrication and characterization of biomimetic

    2017-11-25 · Conventional dental composites with randomly dispersed inorganic particles within a polymer matrix fail to recapitulate the aligned and anisotropic structure of the dentin and enamel. The aim of the study was to produce a biomimetic composite consisting of a ceramic preform with graded and continuously aligned open pores, infiltrated with epoxy ...

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  • Adhesion of Hydroxyapatite Nanoparticles to Dental ...

    2020-5-5 · Hydroxyapatite nanoparticles (nano-HAP) are receiving considerable attention for dental applications, and their adhesion to enamel is well established. However, there are no reports concerning the effects of HAP on other dental materials, and most of the studies in this field are based on in vitro designs, neglecting the salivary pellicle-apatite interactions.

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  • Use of Stem Cells in Dental Implants and Enamel ...

    2020-7-10 · factors, stable and durable biodegradable polymer scaffolds materials are highly needful [5]. For framing , grow th and regeneration of enamel and pulp tissue, cementum periodontal-ligament complex formation is highly essential [6]. This is also cooperatively regulated by the epithelial

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  • Fracture resistance of ceramic and polymer-based

    Methods: The occlusal surfaces of 64 extracted premolars were prepared in the enamel layer and restored with occlusal veneers with a fissure/cusp thickness of 0.5/0.8mm made from four different dental CAD/CAM materials: group LD lithium disilicate (e.max CAD), group LS zirconia-reinforced lithium silicate (Vita Suprinity), group PI polymer ...

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  • Effects of Different pH Conditions on Enamel Erosion ...

    2016-8-24 · enamel surfaces were described and a possible relationship between unique solubility of n-FA at different pH condi-tions and growth of new apatite crystals was proposed. 2. MATERIALS AND METHODS 2.1. Materials The n-FA with a size of approximately 40 nm was syn-thesized in the laboratory. Briefly, solution A was made by adding 23.6 g ...

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  • On the brittleness of enamel and selected dental

    Dental materials with a wear resistance similar to that of the opposing enamel are a good choice for restoring dental fluorosis (trial registration: WCHSIRB-D-2014-126, registered 25 December 2014 ...

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  • Repair of tooth enamel by a biomimetic mineralization ...

    Sustainable polymer nanocoatings: An innovative concept. The modification of surface properties, such as metals, medical devices, and glass mirrors, represents a vital opportunity to inhibit the buildup of proteins or contaminants (i.e., fouling) for biomedical materials/devices, food packaging, many membrane filtration applications.

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  • Nanotechnology and Emerging Technologies News

    This study was designed to evaluate the effect of nano-tricalcium phosphate (n-TCP) and nanohydroxyapatite (n-HAP) on prevention of restaining of enamel after dental bleaching. Methods .

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  • FINE MECHANICAL TESTING AT OLEM /IMEX/

    2020-7-21 · • Nanoscratch can be used for testing the human enamel and dentine and biocompatible dental filling materials: polymer nanocomposites, glass ionomer, and silver amalgam. • Nano-scratch gave critical load determining the adhesion of coating to …

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  • Investigation on the Gradient Nanomechanical

    2018-10-30 · This study aims to investigate the gradient nanomechanical behavior of dental fluorosis enamel and provide appropriate selection criteria for restorative materials. The nanomechanical properties of the outer, middle, and inner layers of normal tooth enamel, mild dental fluorosis enamel, and severe dental fluorosis enamel were tested by nanoindentation under an applied load of 2000 μN and ...

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  • New polymer‐chemical developments in clinical

    2012-8-6 · New polymer‐chemical developments in clinical dental polymer materials: Enamel–dentin adhesives and restorative composites. Norbert Moszner. ... A continuous improvement of the properties of current composites was achieved with the use of new tailor‐made methacrylate cross‐linkers, new additives, and photoinitiators as well as tailor ...

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  • Characterization of Aerosols and Fine Particles Produced ...

    1Department of Dental Materials Science and Technology and 2Department of Oral Microbiology, Iwate Medical University School of Dentistry, Iwate, Japan Synopsis Human lung receives many inhaled particles in daily life. In dentistry, rotary cutting instruments (e.g. diamond points and carbide burs) driven by water-cooled high-speed air-turbine ...

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  • Review Article Polymer-Ceramic Bionanocomposites for ...

    2019-7-30 · Review Article Polymer-Ceramic Bionanocomposites for Dental Application Jung-HwanLee, 1 Hae-WonKim, 1,2,3 andSeog-JinSeo 1,2 Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan- , Republic of Korea

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  • Nano-Ceramics: An Innovative Material for CAD/CAM ...

    2021-2-5 · Dental restorative materials with high mechanical properties and biocompatible performances are promising. In this work, polymer-infiltrated-ceramic-network materials (PICNs) were fabricated via ...

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  • (PDF) Mechanical and biocompatible properties of

    Resin Teeth, Acrylic Teeth, Acrylic Denture Teeths manufacturer supplier in China, offering 2-Layer Dental Synthetic Polymer Teeth Resin Teeth Acrylic Denture Teeth, Mini Dental Apex Locator Endodontic Root Canal Treatment Tool for Endomotor, Dental Intra-Oral X-ray Imaging Systems/Dental Rvg Digital X Ray Sensor and so on.

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  • China 2-Layer Dental Synthetic Polymer Teeth Resin

    2017-5-22 · Research on the incorporation of cutting-edge nano-antibacterial agent for designing dental materials with potent and long-lasting antibacterial property is demanding and provoking work. In this study, a novel resin-based dental material containing photocurable core-shell AgBr/cationic polymer nanocomposite (AgBr/BHPVP) was designed and developed.

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  • Development of a novel resin-based dental material

    This study was designed to evaluate the effect of nano-tricalcium phosphate (n-TCP) and nanohydroxyapatite (n-HAP) on prevention of restaining of enamel after dental bleaching. Methods .

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  • Characterization and Evaluation of Bond Strength of

    2014-1-7 · G3 presented the highest bond strength to enamel (64.40 MPa, ±7.36) and dentin (39.59 MPa, ±21.46). ... The aim of this study was to modify a polymer dental adhesive system with hydroxyapatite nanoparticles as ... at a speed of 360 rpm for 30 s. In Groups G2E and G2D and in G3E and G3D the same procedures were performed as for the previously ...

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  • Dental Polymers | SGS Polymer Solutions

    2019-2-13 · Dental appliances have been made from a long list of materials, some stranger than others. Early American presidents had replacement teeth made of wood and animal teeth. Eventually, metals were used– often an amalgam of liquid (elemental) mercury and a …

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  • WEAR BEHAVIOUR AND SURFACE ROUGHNESS OF

    2016-10-25 · Materials and methods: Two-body wear was investigated in custom made tooth wear brushing machine (60,000 cycles, 20 N and 60 cycle/min). The test specimens were divided into two groups, each group consisted of 8 ceramic specimens and 8 enamel cusp antagonists.

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  • High strength and toughness in chromatic polymer ...

    Moreover, it maintains a relatively low elastic modulus of 88.2GPa and a moderate hardness of 4.8GPa, close to those of natural enamel. Significance: This polymer-infiltrated zirconia ceramic material is a dental material of biomimetic chromatic and mechanical properties.

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  • Effects of Different pH Conditions on Enamel Erosion ...

    2016-8-24 · enamel surfaces were described and a possible relationship between unique solubility of n-FA at different pH condi-tions and growth of new apatite crystals was proposed. 2. MATERIALS AND METHODS 2.1. Materials The n-FA with a size of approximately 40 nm was syn-thesized in the laboratory. Briefly, solution A was made by adding 23.6 g ...

    Get Price
  • Fabrication and characterization of biomimetic

    Fabrication and characterization of biomimetic ceramic/polymer composite materials for dental restoration Dent Mater. 2013 Apr;29(4):375-81. doi: 10.1016/j.dental.2012.12.004. Epub 2013 Jan 8. Authors Morena Petrini 1 , Maurizio Ferrante, Bo Su. Affiliation 1 Dental Materials ...

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  • Are nano-composites and nano-ionomers suitable for ...

    2009-4-28 · In routine orthodontic practice, it is essential to obtain a reliable adhesive bond between an orthodontic attachment and tooth enamel. Filled dental restorative materials have been used as orthodontic adhesives (Eversoll and Moore, 1988). These materials consist of an organic diacrylate (bisphenol A diglycidylether methacrylate: BIS-GMA), a ...

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  • Effects of Ceramic Density and Sintering Temperature

    2018-5-10 · Elastic modulus of polymer-infiltrated ceramic-network (PICN) dental materials based on three sintered temperatures. An increase in material density resulted in higher elastic modulus values at the same sintering temperature. The 100-value (x-axis) of 186.79 GPa corresponded to the elastic modulus of the dense ceramic sintered at 1,300°C, as ...

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  • Ultra-thin occlusal veneers bonded to enamel and

    Ultra-thin occlusal veneers bonded to enamel and made of ceramic or hybrid materials exhibit load-bearing capacities not different from conventional restorations.

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  • Contamination by air turbine handpieces | British

    2005-5-28 · Objective To demonstrate and quantify the discharge of lubricating oil from high-speed air turbine handpieces whilst running.. Materials and methods Dye …

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  • Current issues in research on structure-property ...

    2012-5-14 · used to create tooth enamel and bone mimics. In the formercase, it ... properties of solid polymer nanocomposites with their nano-scale ... composite materials engineered at the nano-scale is highly desired (Fig. 2a). In order to bridge the gap between the discontinuous nano-scale structure and continuum macroscale models, it is ...

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  • Attempt to assess the infiltration of enamel made with ...

    Abstract Introduction: The resin infiltration technique, a minimally invasive method, involves the saturation, strengthening, and stabilization of demineralized enamel by a mixture of polymer resins without the need to use rotary tools or the risk of losing healthy tooth structures. Aim of the study: 1. To design and synthesize an experimental infiltrant with potential bacteriostatic properties.

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  • Use of Silver Nanomaterials for Caries Prevention: A ...

    Introduction. Nanotechnology is science, engineering, and technology involves the synthesis, characterization, and application of materials by controlling the shape and size at the nanoscale. 1 The development of nanomaterials for medical care is an important part of nanotechnology. The European Commission defined “nanomaterial” in 2011 as a natural, incidental, or manufactured material ...

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  • Morphology and structure of polymer layers

    Human dental erosion caused by acids is a major factor for tooth decay. Adding polymers to acidic soft drinks is one important approach to reduce human dental erosion caused by acids. The aim of this study was to investigate the thickness and the structure of polymer layers adsorbed in vitro on human dental enamel from polymer modified citric ...

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  • Surface characteristics of dental resin nanoceramic in

    2020-5-5 · Consistently, reported have emphasized the importance of dental polishing for resin based ceramic materials, like RNC and hybrid ceramic with resin polymer (VITA Enamic, VITA Zahnfabrik, Germany) . In addition to the diamond grit size, depth of cut, feed rate, and rotational speed are the minor factor in finishing process.

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  • Indications for the Clinical Use of Composite Materials ...

    2019-5-27 · Materials 2019, 12, 1720 4 of 16 200 gf load, 10 s contact period and averaged. The indentations were made in a triangular mode, 1 mm distant to the specimen margins and the results were registered in Vickers micro-hardness (VHN). 2.4. Interactions with Dentin Dentin specimens were prepared from extracted sound third molars and kept in ...

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  • Reactivity with Dentin - MDPI

    1977-4-1 · Polymer adhesion to enamel Polymer adhesion to enamel CATE, J. M. TEN; KEIZER, S.; ARENDS, J. 1977-04-01 00:00:00 J. M. TEN CATE, S. K E I Z E R a ^ ^ J . ARENDS Laboratory for Materia Technica, State University of Grohingen, The Netherlands Summary For a four-component acrylate adhesive system the influence of viscosity and penetration on adhesion to enamel was …

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  • Polymer adhesion to enamel, Journal of Oral

    2019-9-10 · Dental esthetic restorative treatments are widely desired by patients today, with resin composites being the most common direct restorative materials used, especially due to their satisfactory mechanical and physical properties for restoring both posterior and anterior teeth [1, 2].Of note, resin composites have evolved since their development in the early 1960s: while macrofilled composites ...

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