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  • Comparison of human enamel and polymer-infiltrated

    2016-7-1 · The nano-mechanical behaviours of both materials were analysed via nanoindentation. Maximum nanoindentation loads of 1000, 2000 and 3000 μN were applied with holding times of 90 s.The rate of loading and unloading was 200 μN/s.The reduced elastic moduli and nanohardness of the enamel and PICN specimens were measured using the conventional Oliver and Pharr approach , .

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  • A novel polymer infiltrated ceramic dental material ...

    2011-6-1 · 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 protecting ...

    2012-10-1 · 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 acid solutions. Methods The polymers propylene glycol alginate (PGA), highly esterified pectin (HP) and gum arabic (GA) were used to prepare polymer modified citric acids solutions ...

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  • Tribological characteristics of enamel–dental material ...

    2015-4-29 · the market composite dental materials under sliding friction. 2. Materials and methods The paper presents an analysis of the tribological characteristics of enamel and two composite materials intended for permanent dental fillings: Estelite Sigma (Tokuyama Dental, Japan – …

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  • New Polymer-Chemical Developments in Clinical Dental ...

    the corresponding dental material classes, present the state of the art and future trends using new components and pro-cedures, and include our contribution in the development of polymer materials for dental application. ENAMEL–DENTIN ADHESIVES State of the Art of Enamel–Dentin Adhesives Nowadays, durable esthetic tooth-colored restorative ...

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  • Nano-CT as tool for characterization of dental resin ...

    2020-9-23 · Technological advances have made it possible to examine dental resin composites using 3D nanometer resolution. This investigation aims to characterize existing dental nano …

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  • Tooth Enamel - an overview

    Akio Makishima, in Biochemistry for Materials Science, 2019. 18.5 Synthetic Tooth Enamel. Tooth enamel is made of parallel microscale and nanoscale ceramic columns or prisms filled with a soft protein matrix. This structure is similar in all species across all geological times. This invariability suggests the existence of a functional basis.

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  • New polymer‐chemical developments in clinical dental ...

    A number of advances and developments in composite dental restorative materials mainly until 2009 addressed to dental researchers were reviewed by Cramer et al. 121 and, recently, a short review highlighted the use of natural compounds for the development of dental resins. 122 In the following chapters, new polymer-chemical developments of ...

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  • (PDF) Mechanical and biocompatible properties of

    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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  • 3D printing of polymer matrix composites: A review and ...

    2017-2-1 · The addition of 5 wt% nano-titanium dioxide(TiO 2) , 10 wt% carbon nanofiber or 10 wt% multi-walled carbon nanotube showed a 13.2%, 39% and 7.5% increase in the tensile strength of printed composite parts compared with unfilled polymer parts, respectively, but all printed composite parts showed reduced elongation and more brittle feature in ...

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  • Development of a novel resin-based dental material with ...

    2017-5-22 · Abstract 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. The shell of polymerizable …

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  • Fabrication and characterization of biomimetic ceramic ...

    Objective: 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 resin.

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  • Abiotic tooth enamel

    2017-3-2 · The special mechanical properties of tooth enamel 17,18, potentially combined with other properties 19 afforded by similar materials architectures 20,21, must present evolutionary advantages ...

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  • Nanotechnology for dental composites

    The advantages of nanoparticle materials for dental filling are reduced polymerisation shrinkage, enhanced resistance, biocompatibility, high elastic modulus, and improved optical properties of ...

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  • Partial Discharge Characteristics of Polymer

    Polymer nanocomposites have recently been attracting attention among researchers in electrical insulating applications from energy storage to power delivery. However, partial discharge has always been a predecessor to major faults and problems in this field. In addition, there is a lot more to explore, as neither the partial discharge characteristic in nanocomposites nor their electrical ...

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  • Effects of Ceramic Density and Sintering Temperature on ...

    2018-5-10 · Polymer-infiltrated ceramic-network (PICN) dental material is a new and practical development in orthodontics. Sintering is the process of forming a stable solid mass from a powder by heating without melting. The aim of this study was to evaluate the effects of sintering temperature on the mechanical properties of a PICN zirconia dental material.

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  • In vivo remineralization of dentin using an agarose ...

    2017-2-7 · Human tooth is composed of the outermost enamel layer and the inner dentin−pulp complex. Dental enamel, as the hardest mineralized tissue present in the human body, approximately 96% of …

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  • Effect of bur selection on machining damage mechanisms

    2020-10-1 · A computer-assisted dental machining apparatus was used to machine PICN samples, as shown in Fig. 2.Details of the apparatus was documented previously [], which consists of a computer-controlled movement table and a high-speed dental handpiece (PA-S, NSK, Japan) with a bur inserted into the metal friction chuck of the handpiece.A sample surface of 14 mm × 5 mm was connected to a …

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  • (PDF) Micromechanics of hierarchical materials: A brief ...

    A short overview of micromechanical models of hierarchical materials (hybrid composites, biomaterials, fractal materials, etc.) is given. Several examples of the modeling of strength and damage in ...

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  • Professor Robert J K Wood

    Phone: (023) 8059 4881 Email: [email protected] Professor Robert J K Wood FREng, CEng, FIMechE, FICorr, FIMMM, FHEA Professor of Surface Engineering and Tribology, Associate Dean of Research,Founder of the UK National Centre for Advanced …

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  • Polymer Infiltrated Ceramic Hybrid Composites as Dental ...

    2018-3-5 · Hybrid Composites as Dental Materials. Oral Health and Dental Studies. 2018; 1(1):2. Open Access Oral Health and Dental Studies Keywords Polymer, ceramic, infiltration, composites Introduction Dental materials with comparable mechanical performance and esthetic effects to that of natural human enamel and dentin are in demand.

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  • Occlusal wear of metal-free ceramic-filled polymer crowns ...

    The objective of this clinical study was to investigate the influence of gender, arch, and crown location on the occlusal wear of metal-free ceramic-filled polymer crowns and to compare their wear with the mean annual occlusal wear of enamel (15 to 38 microm). MATERIALS AND METHODS: One hundred fourteen ceramic-filled polymer crowns made of ...

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  • Polymer Infiltrated Ceramic Hybrid Composites as Dental ...

    2018-2-14 · Advancement in dental materials has made it possible to manufacture polymer/ceramic composites for direct and indirect restoration. However, applying polymer/ceramic composites to durable and biomimetic assemblies and maintaining their tailored-made functions as dental materials comes with opportunities and challenges for practical implementation. This article reviews the state-of-the-art ...

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  • Investigation on the Gradient Nanomechanical Behavior of ...

    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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  • A novel polymer infiltrated ceramic for dental simulation ...

    2011-5-26 · 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. However, the fracture toughness value of the phantom tooth material, which is 1.9 ± 0.07 MPa m 1/2, is slightly higher than that of polymer ...

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  • The Dynamic Viscoelasticity of Dental Soft Polymer ...

    The aim of this study was to investigate the dynamic viscoelasticity of dental soft polymer material containing citrate ester-based plasticizers. Three kinds of citrate ester-based plasticizer (Citroflex® C-2: TEC, Citroflex® A-2: ATEC, and Citroflex® A-4: ATBC), with the combination of 5 wt% ethyl alcohol, were used as the liquid phase.

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  • Lightweight 3D cellular composites inspired by balsa

    2017-5-15 · 1. in wind turbine rotor blades). Balsa wood is composed Introduction With inspiration from biological materials, such as wood, coupled with recent advances in additive manufacturing techniques, the fabrication of lightweight cellular structures with improved mechanical properties resulting from …

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  • Review on Hybrid Composite Materials and its Applications

    2017-3-3 · A broad class of materials, with microstructures modulated in zero to three dimensions on length scales less than 100 nm. • Materials with atoms arranged in nano sized clusters, which become the constituent grains or building blocks of the material. …

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  • Polymer infiltrated ceramic Vs pressable ... - Dental News

    2017-2-8 · These materials are known as hybrid dental ceramics, polymer infiltrated ceramic material is one of these hybrid materials 10. One of the most recently introduced fully sintered CAD/CAM block, the Vita Enamic material, is a polymer infiltrated ceramic form of feldspathic ceramic 86 wt% and polymer …

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  • Study of Surface Structure Changes for Selected Ceramics ...

    2019-6-12 · In the article has been presented an analysis of susceptibility of selected dental materials, made in the CAD/CAM technology. The morphology and structural properties of selected dental materials and their composites were determined by using XRPD (X-ray powder diffraction) techniques, as well as the IR (infrared) spectroscopy. Moreover, an adhesion as well as development of biofilm by oral ...

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  • Nano composite of aluminum oxide and polymer is strong ...

    Shells, bones, and tooth enamel all consist of stiff ceramic platelets arranged in a polymer matrix like bricks in mortar. In their efforts to create strong yet light materials, chemists and materials scientists have long tried to mimic nanostructures found in nature. A nano composite of aluminum oxide and a polymer is as tough as metals but lighter, and is suitable for dental material and ...

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  • Investigation on the Gradient Nanomechanical Behavior

    2018-10-30 · 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). Keywords: Dental fluorosis, Enamel, Microstructure, Nanoindentation, Nanoscratch

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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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  • 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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  • Experimental Investigation on Dielectric and Thermal ...

    2014-5-1 · The dielectric strength of the nanocomposite at 1 wt%, 3 wt% and 5wt% of Alumina nano filler added enamel and enamel without nano filler are measured. The results are presented in Table 1. It seems that there is a tendency of a change in AC breakdown strength with change in concentration of nano …

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  • Compression fatigue properties and damage

    2021-6-27 · Dental materials a b s t r a c t isresistance invariably in develop-critical for materials, but is rarely considered the ment of new bioinspired materials. Here the fatigue behavior and damage mechanisms of a nacre-like ceramic (yttria-stabilized zirconia) - polymer (polymethyl methacrylate) composite, which resembles hu-

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

    The regeneration of tooth enamel, the hardest biological tissue, remains a considerable challenge because its complicated and well-aligned apatite structure has not been duplicated artificially. We herein reveal that a rationally designed material composed of calcium phosphate ion clusters can be used to produce a precursor layer to induce the epitaxial crystal growth of enamel …

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  • Nano-FTIR chemical mapping of minerals in biological

    Nano-FTIR chemical mapping of minerals in biological materials. Methods for imaging of nanocomposites based on X-ray, electron, tunneling or force microscopy provide information about the shapes of nanoparticles; however, all of these methods fail on chemical recognition.

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  • A review on 3D printed matrix polymer composites: its ...

    Additive Manufacturing technology has a significant impact on the modern world because of its ability to fabricate highly complex computerized geometrics. Pure 3D-printed polymer parts have limited potential applications due to inherently inferior mechanical and anisotropic properties. For more utilization and versatility, the addition of fillers has enhanced their functionalities. 3D printing ...

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  • PEEK :Polyetheretherketone applications in clinical dentistry

    2018-5-28 · PEEK History In 1978, a group of English scientists developed PEEK , a semi- crystalline linear polycyclic aromatic polymer . It was first commercialized in the 1980s for industrial applications in the manufacture of aircraft, turbine blades, piston parts, cable insulation, and compressor plate valves. PEEK was introduced to dental …

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  • Nano composite of aluminum oxide and polymer is strong ...

    Shells, bones, and tooth enamel all consist of stiff ceramic platelets arranged in a polymer matrix like bricks in mortar. In their efforts to create strong yet light materials, chemists and materials scientists have long tried to mimic nanostructures found in nature. A nano composite of aluminum oxide and a polymer is as tough as metals but lighter, and is suitable for dental material and ...

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  • Nano-mechanical properties profiles across dentin–enamel ...

    Measurements were made along x direction, Fig. 1b in enamel and dentin away from the surface of the teeth ( ) and the DEJ zone to obtain representative nano-mechanical properties in each tissue. This allowed the evaluation of the average values of hardness and elastic moduli of the respective regions and their comparison with those found in the ...

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  • Home

    2021-6-14 · The experts from Area A are investigating 'quasi-self-similar structures with multifunctional properties' such as the nano-ceramics that are covered with polymer layers like tooth enamel. The focus in Area B is on 'nano-structured multi-phase materials systems'. Here, the researchers are studying new types of materials involving sponge-like ...

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  • Phosphorus-Based Polymers: From Synthesis to ...

    2015-11-25 · 8.1 Introduction to Dental Materials 151(1) 8.2 Enamel/Dentin Adhesives 152(2) 8.2.1 Dental Adhesive Systems 152(1) 8.2.2 Composition of Self-Etch Adhesives 153(1 ...

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  • Protein disorder–order interplay to guide the growth of ...

    2018-6-1 · Materials such as nacre, bone, and dental enamel possess distinct structural organization at different length scales, which enhance their bulk material properties and functionality 2.

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  • Polymer Microspheres Products - EPRUI Biotech

    2021-8-24 · EPRUI Biotech 2021-01-04T06:34:04+00:00. PMMA Microspheres. PMMA microspheres are PMMA particles with spherical morphology. Poly (methyl methacrylate) (PMMA), also known as acrylic or acrylic glass. It is a transparent thermoplastic often used in sheet form as a lightweight or shatter-resistant alternative to glass.

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  • US6863530B2 - Expandable polymer dental implant and

    Systems and methods for a dental implant system suitable for an endosteal implant into a jawbone are provided. The systems and methods make use of an expandable polymer sheath insertable into a jawbone, an implant insertable into the sheath and causing expansion of the sheath upon insertion, and an abutment adapted to be coupled to the implant and permitting the attachment of a dental prosthesis.

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  • Nanogels of carboxymethyl chitosan and lysozyme ...

    2018-6-11 · This study aimed to develop of a rapid and effective method to occlude dentinal tubules using carboxymethyl chitosan and lysozyme (CMC/LYZ) nanogels with encapsulated amorphous calcium phosphate (ACP) based on the transformation of ACP to HAP. In this work, CMC/LYZ was used to stabilize ACP and form CMC/LYZ-ACP nanogels, and then the nanogel-encapsulated ACP was …

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  • Additive Manufacturing for Aerospace: 3D Printing ...

    2019-10-7 · The study case for the thesis was a low-pressure turbine rotor blade mounted on an aeronautical turbofan engine. The basic structure is made up of a fan, compressor, combustion chamber, high/low ...

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  • The Folly of Building-Integrated Wind

    2009-4-29 · The 16-foot-tall (5 m) by 10-foot-diameter (3.1 m) turbine is designed for mounting on a mast that is installed either stand-alone or on top of a building. The peak DC power output in 31 mph (14 m/s) wind is 6.2 kW, with the British Wind Energy …

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  • Nano-mechanical properties profiles across dentin–enamel ...

    Measurements were made along x direction, Fig. 1b in enamel and dentin away from the surface of the teeth ( ) and the DEJ zone to obtain representative nano-mechanical properties in each tissue. This allowed the evaluation of the average values of hardness and elastic moduli of the respective regions and their comparison with those found in the ...

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  • Scattering and absorption properties of biomaterials for ...

    2019-10-22 · Currently, dental-resin composites and dental zirconia ce-ramics are two biomaterials which are used to replace the most important dental tissues in irreversibly diseased teeth, i.e. enamel and dentine, respectively. Dental nano-filled resin composites have recently been introduced [23]. …

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  • CN103740242A - Nano-modified corona resistant wire

    The invention discloses a nano-modified corona resistant wire enamel, which is made of the following raw materials by weight part (kg): 12-15 of nylon 12, 12-15 of alkyd resin, 6-8 of ethyl acrylate, 6-9 of calcium bentonite, 2-3 of a crosslinking agent TAC, 2-3 of diphenyl methane diisocyanate, 2-5 of nano-titanium dioxide, 12-15 of dimethylaminoethyl acrylate, 1-2 of zinc cyanurate, 3-4 of ...

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  • Recent advancements in glass ionomer materials with ...

    Nanotechnology involves the use of systems, modifications, or materials that have the size in the range of 1–100nm., In dentistry, uses of nanotechnology include implant surface modifications, production of reinforced polymeric composites by incorporation of nano-sized particles, and caries prevention. Recent studies have suggested that incorporation of nano-sized particles or ...

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  • New materials take a bite out of tooth decay

    2016-8-1 · “Tooth enamel and dentin naturally in your mouth are perfect materials; everything after that is inferior,” says Alan Boghosian, a Chicago dentist with 36 years of clinical experience.

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  • Polymer Microspheres Products - EPRUI Biotech

    2021-8-24 · EPRUI Biotech 2021-01-04T06:34:04+00:00. PMMA Microspheres. PMMA microspheres are PMMA particles with spherical morphology. Poly (methyl methacrylate) (PMMA), also known as acrylic or acrylic glass. It is a transparent thermoplastic often used in sheet form as a lightweight or shatter-resistant alternative to glass.

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  • Polymer nanocomposites - additives, properties ...

    2021-3-10 · Various additives are added to plastics to either improve processability, change product properties or protect them against thermal, UV or light influences. In the case of a polymer nanocomposite, the additives have at least one dimension of less than 100 nm and can be found in the form of platelets, fibres or particles. They primarily serve to improve tensile strength, thermoformability ...

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  • Nanogels of carboxymethyl chitosan and lysozyme ...

    2018-6-11 · A schematic model of the process of gel formation. Fig. 1a shows the schematic model of the process of CMC and lysozyme: blue ball represents lysozyme, the red and blue curves respectively represent the positive charge area and the negative charge area of CMC. Firstly, lysozyme binds to the negatively charged regions of CMC. The molecules intertwine with each other to form CMC/LYZ nanogel.

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  • Theses and Dissertations Available from ProQuest

    Dissertations & Theses from 2019. Krishnan, Ankita (2019) Understanding Autism Spectrum Disorder Through a Cultural Lens: Perspectives, Stigma, and Cultural Values among Asians . Suzuki, Takakuni (2019) Quantifying the Relations among Neurophysiological Responses, Dimensional Psychopathology, and Personality Traits . Dissertations & Theses from 2018. Abdel-Salam, Ahmed Nabil (2018) …

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  • Marginal and internal adaptation of Class II ormocer and ...

    2004-7-10 · To overcome the shortcomings of the conventional composite restorative materials, ormocer materials have been introduced over the past few years. The purpose of this study was to evaluate the marginal and internal adaptation of two ormocer restorative systems (Admira, Voco and Definite, Degussa) compared to a hybrid composite one (TPH Spectrum, Dentsply DeTrey), before and after …

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  • Fabrication and characterization of biomimetic ceramic ...

    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 ...

    Get Price
  • In vitro remineralization of human dental enamel by ...

    2010-10-14 · Different compositions of silicate-based bioactive glasses of the system SiO2–CaO–P2O5 (45S, 58S, and 77S) were evaluated for teeth remineralization effect on the etched human dental enamel in simulate human oral environment. Enamel samples were subjected to demineralization in citric acid solution, then treated with different bioactive glass pastes, and finally soaked in simulated oral ...

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  • WearcharacteristicsofcurrentaestheticdentalrestorativeCAD ...

    2021-8-3 · CAD/CAM materials, whether ceramic- or polymer-based, show two-body wear similar to that of enamel and that the loss of vertical dimension is similar. Toothbrushing is a common cause of abrasion leading to physical wear of the tooth surface through a mechanical process independent of occlusion (Mehta et al., 2012).

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  • Synthesis of plate-like β-tricalcium phosphate ...

    2019-12-7 · The purpose of this study was to synthesize nano-sized β-tricalcium phosphate (nano-TCP) particles and determine its concentration-dependent properties on incipient enamel caries lesions. Nano-TCP was synthesized as a wet chemical through a method using low concentration of precursors and low addition rate of calcium nitrate tetrahydrate as a second phase. Morphology and phase composition of ...

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  • Remineralization potential of nano-hydroxyapatite on ...

    2018-5-8 · Remineralization potential of nano-hydroxyapatite on enamel and cementum surrounding margin of computer-aided design and computer-aided manufacturing ceramic restoration Niwut Juntavee,1 Apa Juntavee,2 Preeyarat Plongniras3 1Department of Prosthodontics, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand; 2Department of Pediatric Dentistry, Faculty of Dentistry, …

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  • Yellow-blue earrings made of polymer clay cold enamel

    2021-8-23 · Yellow-blue earrings made of polymer clay, cold enamel and zircon beads. On a copper wire, one-of-a-kind ... prohibited or that use prohibited materials. not properly labeled as mature content. Please choose a reason. Tell us more about how this item violates our policies.

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  • Discharge of lubricant from air turbine handpieces ...

    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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  • Evaluation of adaptation of ceramic inlays using optical ...

    Introduction. All-ceramic materials have been used to restore teeth with highly esthetic demands and to achieve wear-resistant restorations, especially in posterior regions. 1 They have been approved for the treatment of inlay cavities, achieving a high survival rate and good esthetic result. 2, 3, 4 Ceramic inlays are advantageous, allowing for improved marginal adaptation.

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  • Professor Robert J K Wood

    Phone: (023) 8059 4881 Email: [email protected] Professor Robert J K Wood FREng, CEng, FIMechE, FICorr, FIMMM, FHEA Professor of Surface Engineering and Tribology, Associate Dean of Research,Founder of the UK National Centre for Advanced …

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  • Honorary Professor Robert J. Wilkinson MA (Cambridge)

    2021-8-24 · Senior Group Leader at The Francis Crick Institute, London; and Wellcome Senior Fellow in Clinical Science at Imperial College London [both posts seconded to the University of Cape Town]; Director, Centre for Infectious Diseases Research in Africa (CIDRI-Africa); Group leader and Director, Crick African Network; and Member, Institute of Infectious Disease and Molecular Medicine; …

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  • Polymer Infiltrated Ceramic Hybrid Composites as Dental ...

    2018-3-5 · Hybrid Composites as Dental Materials. Oral Health and Dental Studies. 2018; 1(1):2. Open Access Oral Health and Dental Studies Keywords Polymer, ceramic, infiltration, composites Introduction Dental materials with comparable mechanical performance and esthetic effects to that of natural human enamel and dentin are in demand.

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  • 1-2. Components of a Motor

    At present, high-polymer materials are used for insulation, but habitual naming criteria of enameled wire are still used. As a component of motor winding, the term 'enameled wire' is used in Japanese. Enameled wire is referred to as magnet wire in English. (2) Core (Iron) core is the path for flux and is made …

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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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  • Continuum damage modeling and simulation of hierarchical ...

    2016-4-25 · Dental enamel exhibits high fracture toughness and stiffness due to a complex hierarchical and graded microstructure, optimally organized from nano- to macro-scale. In this study, a 3D representative volume element (RVE) model is adopted to study the deformation and damage behavior of the fibrous microstructure.

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  • Translucency of human teeth and dental restorative ...

    2015-4-15 · 1. Introduction. The following subjects related to the translucency of human teeth and substituting restorative materials were considered based on peer-reviewed papers: (1) clinical relevance and significance of translucency in teeth and dental restorative materials, (2) varied measurement methods for translucency, (3) influence of tooth microstructure on translucency, (4) normal and age ...

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  • Novel Protein-Repellent and Antibacterial Resins and ...

    2019-7-30 · to a clean polymer surface, providing anchor points for bac-teria attachment, which is the first step in biofilm formation [18, 19]. Accordingly, efforts were made to develop novel protein-repellent dental materials to prevent the adsorption of proteins …

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  • Materials

    Interfaces between dentin, enamel and luting agents were characterized using low vacuum Scanning Electron Microscopy (SEM). After smear layer creation, one of three luting agents (RelyX Unicem 2, Clearfil SA Cement and Panavia F 2.0/ED Primer II) was applied on 60 enamel-dentin specimens and dual-cured or self-cured. Specimens were polished (Experiment 1) and subsequently demineralized …

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  • The Effect of Silver Oxide Nanoparticles on the ...

    Table 1: Antibacterial activity. For group III i.e. (Transbond XT with 10 wt% AgO nanoparticles) the mean inhibitory zone was found to be 2.79 mm with a standard deviation of 0.27.The mean was found to be highest for Group III i.e. (Transbond XT with 10 wt% AgO nanoparticles) (2.79 mm) followed by Group II i.e. (Transbond XT with 5 wt% AgO nanoparticles) (1.84 mm) and least for group III ...

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  • Yellow-blue earrings made of polymer clay cold enamel and ...

    2021-8-23 · Yellow-blue earrings made of polymer clay, cold enamel and zircon beads. On a copper wire, one-of-a-kind ... prohibited or that use prohibited materials. not properly labeled as mature content. Please choose a reason. Tell us more about how this item violates our policies.

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  • A perspective of marginal microleakage in class II ...

    2019-8-15 · based composite materials, suggesting its use for dental restorations. 6,8,10,15 Many dental adhesive systems are being used to decrease unwanted effects of polymerization shrinkage and gaps formation. However, restorative dental materials can be affected by marginal microleakage at different levels especially in adhesion regions with enamel ...

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