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  • Three-Dimensional, Bifunctional Microstructured Polymer ...

    Three-Dimensional, Bifunctional Microstructured Polymer Hydrogels Made from Polyzwitterions and Antimicrobial Polymers Langmuir . 2019 Feb 5;35(5):1211-1226. doi: 10.1021/acs.langmuir.8b03410.

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  • Three dimensional printed nanostructure biomaterials for ...

    Three-dimensional printing (3DP) is a manufacturing process in which objects are made by fusing or depositing materials such as; plastic, metal, ceramics, powders, liquids, or even living cells in layers to produce a 3D object .

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  • Accuracy of Three-Dimensional (3D) Printed Dental Digital ...

    Digital impression devices are used alternatively to conventional impression techniques and materials. The aim of this study was to evaluate the precision of extraoral digitalization of three types of photosensitive resin polymers used for 3D printing with the aid of a digital extraoral optical scanner. The alignment of the scans was performed by a standard best-fit alignment.

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  • Materials Science for Dentistry | ScienceDirect

    All flexible mould materials are polymeric and must be cross-linked to be rubber-like, that is, three-dimensional random networks, and they are markedly non-Hookean in their deformation behaviour; this can be traced to features of their structure.

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  • Introduction to Materials Science | ScienceDirect

    Ceramics are essentially materials derived from oxides by firing at high temperature. Ceramics are among the oldest materials used by man. The mineral glasses, characterized by a three-dimensional polymer structure, make up a very important class of technological ceramic materials.

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  • Three‐Dimensional Microvascular Fiber‐Reinforced ...

    2011-7-15 · Du T. Nguyen, Maya Kleiman, Keun Ah Ryu, Stanley Hiew, Kyle Brubaker, Rafik Mughnetsyan, Richard Truong, Benjamin Dolan, Edward Tackett and Aaron P. Esser-Kahn, Three-Dimensional Conformal Coatings through the Entrapment of Polymer Membrane Precursors, ACS Applied Materials & Interfaces, 10.1021/am4053943, 6, 4, (2830-2835), (2014).

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  • 3 Ball bearing cages Phenolic resin matrix based composite ...

    A prototype or model can be created directly by use of three-dimensional printers without any human need. These models are precise and exact. The materials range from plastics to polymers and many more. To deposit the polymer materials, a separate nozzle is used by Fused deposition modeling or FDM.

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  • A Three-Dimensional Finite Element Analysis of the Double ...

    A special three-dimensional crack-tip element has been developed to investigate a simple and widely applicable fracture toughness test method. Previous experimental work with the double-torsion method has shown that the use of a relatively thin sectioned specimen may be permitted.

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  • Finite element and experimental analyses of polymer-based ...

    Dental bridges made of polymer materials reveal only low loading capacity. This paper analyzes possible improvements of the loading capacity of polymer-based dental bridges reinforced by incorporated ceramic bars. Finite element (FE) analyses were performed to study the stress distribution caused by the mastication process in the bridge material.

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  • Dimensional Accuracy of Dental Models for Three-Unit ...

    Previous studies on accuracy of three-dimensional (3D) printed model focused on full arch measurements at few points. The aim of this study was to examine the dimensional accuracy of 3D-printed models which were teeth-prepped for three-unit fixed prostheses, especially at margin and proximal contact areas. The prepped dental model was scanned with a desktop scanner. Using …

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  • Three-dimensional-printed molds and materials for ...

    2019-10-30 · Polymer materials are normally used in 3D-printed molds for low volume production. High-temperature resistance, toughness, and hardness are essential for printed molds to stand above the melting temperature of injected materials. ... Stratasys, 3D Printing and Dental Implants: ... Three-dimensional-printed molds and materials for injection ...

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  • Endodontics - DentaCarts | Dental market

    Three benefits in one solution. EDDY is made from a safe and flexible polymer material, unlike the stiff metal of irrigation needles and ultrasonic tips. Thus, it can easily go around curves – maintaining the integrity of the root canal anatomy. With vibration of 5,000 to 6,000 Hz, EDDY creates a three-dimensional movement.

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  • Accuracy of three-dimensional dental resin models created ...

    2018-3-6 · Recipient(s) will receive an email with a link to 'Accuracy of three-dimensional dental resin models created by fused deposition modeling, stereolithography, and Polyjet prototype technologies: A comparative study' and will not need an account to access the content.

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  • Cytocompatibility of 3D printed dental materials for ...

    2020-6-1 · Three-dimensional (3D) printing is widely used in the fabrication of dental prostheses; however, the influence of dental materials used for 3D printing on temporary restoration of fibroblasts in tissues is unclear. Thus, the influence of different dental materials on fibroblasts were investigated. Digital light processing (DLP) type 3D printing was used.

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  • SUPPORTING INFORMATION: Three-Dimensional, Bifunctional ...

    2019-5-25 · Three-Dimensional, Bifunctional Microstructured Polymer Hydrogels Made From Polyzwitterions and Antimicrobial Polymers Vania Tanda Widyaya, † Claas Müller, ‡ Ali Al-Ahmad,§ and Karen Lienkamp †, * † Bioactive Polymer Synthesis and Surface Engineering Group, Department of Microsystems

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  • 3D Printing in Dentistry | SpringerLink

    2010-1-7 · The development of a new material system for three-dimensional printing (3DP) can be difficult without experience in the field, since the flexibility of the 3DP process implies a large number of material and processing parameters.

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  • Development Process for Custom Three-Dimensional

    A special three-dimensional crack-tip element has been developed to investigate a simple and widely applicable fracture toughness test method. Previous experimental work with the double-torsion method has shown that the use of a relatively thin sectioned specimen may be permitted.

    Get Price
  • A Three-Dimensional Finite Element Analysis of the Double ...

    2019-6-15 · The general development method is comprised of six consecutive stages, as shown in Fig. 1; the specific method of each stage is described in a dedicated sub-section.In the first stage, the cycle definition is performed, where the operation conditions are set and the resulting thermodynamic boundary conditions are fed to the second stage – the design of the turbine.

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  • Development of a 1000 W organic Rankine cycle micro ...

    2015-1-1 · Three-dimensional fabric structures have three broad categories – solid, hollow and shell – although more specific classifications may be used depending on structural details (Chen, 2011; Fukuta and Aoki, 1986, Khokar, 2001). Three-dimensional fabrics can be produced through most of the usual fabric making processes such as weaving ...

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  • Three-Dimensional Finite Element Analysis of Anterior Two ...

    The aim of this study was to evaluate the influence of different framework materials on biomechanical behaviour of anterior two-unit cantilever resin-bonded fixed dental prostheses (RBFDPs). A three-dimensional finite element model of a two-unit cantilever RBFDP replacing a maxillary lateral incisor was created. Five framework materials were evaluated: direct fibre …

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  • Three-dimensional microarchitected materials and devices ...

    2021-3-16 · Supports in metal 3D printing work counter-intuitively like “anchors” that hold down, rather than hold up, features within the part. This is to prevent a part from distorting from the residual stresses caused by the high processing temperatures, which will not only destroy the part but also typically cause the re-coater to crash. Velo3D.

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  • Metal 3D Printing: Who Needs Supports? — Sierra Turbines

    2016-4-7 · Background . Type of materials used in fabrication of denture base has an effect on dimension during denture base material processing and other factors related to clinical use. Objective . The study aims were to assess the dimensional stability including thermal changes of three different denture base materials. Methods .

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  • Effect of Different Denture Base Materials and Changed ...

    FDM/FFF. FDM printing is a 3D printing technology resulting in three-dimensional forms by means of overlapping layers of plastics extruded from a heated small diameter nozzle. This technology uses a very wide range of materials (so-called thermoplastics) with different properties for 3D printing. Among other things, equal efficiency concerns the following materials:

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  • Home - Protomaker

    Advanced Ceramic Materials and Processes for Three-Dimensional Printing (3DP) Ben Utela,1 Rhonda L. Anderson,*1 and Howard Kuhn2 1 University of Washington, Dept. of Mechanical Engineering, Box 352600, Seattle, WA 98195-2600, USA 2The Ex One Company, 8001 Pennsylvania Avenue, Irwin, PA 15642, USA. *Author to whom correspondence should be …

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  • Advanced Ceramic Materials and Processes for Three ...

    2021-1-24 · Conventional thermoplastics, ceramics, graphene-based materials, and metal are commonly used to meet consistent specifications and build high-quality products. This post will explore some of the best used raw materials in 3D printing. 1. Metals. Metal 3D printing is gaining more attention in aerospace, automobile, medical application, and ...

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  • What are the common raw materials used for 3D printing?

    2020-10-13 · Today there are three classes of rubber impression materials available to the dentist, namely, the polysulfides, silicones and the polyether materials (Phillips 1973). The polyether material was the only one of the three types which has been developed specifically for dental use, whereas the other two have been

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  • A Comparison of the Accuracy and Dimensional Stability of ...

    2019-12-23 · The quest to develop materials that enable the manufacture of dimensionally ultra-stable structures for critical-dimension components in spacecraft has led to much research over many decades and ...

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  • Dimensionally and environmentally ultra-stable polymer ...

    A multi-material three-dimensional printing apparatus is provided. The provided apparatus includes two or more print stations. Each of the print stations includes a substrate, a transportation device, a dispersion device, a compaction device, a printing device, a fixing device, and a fluidized materials removal device. The apparatus also includes an assembly apparatus in communication with the ...

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  • US20190375159A1 - Multi-material three-dimensional

    A multi-material three-dimensional printing apparatus is provided. The provided apparatus includes two or more print stations. Each of the print stations includes a substrate, a transportation device, a dispersion device, a compaction device, a printing device, a fixing device, and a fluidized materials removal device. The apparatus also includes an assembly apparatus in communication with the ...

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  • Three Dimensional Modeling of Carbon Foams | IMECE |

    2008-2-5 · The complex structure of graphitized carbon foams is difficult to capture using one or even two-dimensional models. Several attempts have been made to model carbon foams as cellular materials. However, the regular models cannot account for the complex interaction between the pores in the true foam.

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  • Finite Element Analysis of Polyurethane Based Composite ...

    2015-3-13 · A three dimensional model of the composite beam has been implemented in this study using SolidWorks. A finite element commercial software ANSYS is used to investigate the stress response and deformation behavior of the model geometry for these three polyurethane based composite shafts for these three boundary conditions.

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  • Three-Dimensional Cell Culture Matrices: State of the Art ...

    2019-9-9 · Three-dimensional microfabrication of materials by femtosecond lasers for photonics applications Journal of Applied Physics, Vol. 106, No. 5 A brief review of dispensing-based rapid prototyping techniques in tissue scaffold fabrication: role of …

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  • Three-dimensional printing for cardiovascular diseases ...

    2020-10-7 · Three-dimensional (3D) printing is widely used in medicine. Most research remains focused on forming rigid anatomical models, but moving from static models to dynamic functionality could greatly aid preoperative surgical planning. This work reviews literature on dynamic 3D heart models made of flexible materials for use with a mock circulatory system.

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  • A Finite Element Approach for Study of Wave Attenuation ...

    2019-1-15 · The finite element models are made up of three phases; viz. the polymer matrix, inclusions (micro constituent), and interphase zones between the inclusions and the polymer matrix. The analysis is performed on a three dimensional finite element model and the attenuation characteristics of ultrasonic longitudinal waves in the matrix are evaluated.

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  • Current Uses of Poly(lactic-co-glycolic acid) in the ...

    Poly(lactic-co-glycolic acid) or PLGA is a biodegradable polymer used in a wide range of medical applications. Specifically PLGA materials are also developed for the dental field in the form of scaffolds, films, membranes, microparticles, or nanoparticles. PLGA membranes have been studied with promising results, either alone or combined with other materials in bone healing procedures.

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  • Advances in Materials Science and Engineering - Hindawi

    2017-3-14 · In this paper, the effect of volume fraction of single-walled carbon nanotubes on natural frequencies of polymer composite cone-shaped shells made from Poly(Methyl Methacrylate) (PMMA) is studied. In order to determine the characterization of materials reinforced with nanoparticles, the molecular dynamics and mixture rule has been used. The motion equations of …

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  • (PDF) Denture base materials: From past to future ...

    Vol .2, Issue 2 March 2010 Denture base materials: From past to future Renu Tandon (M.D.S. Professor), Saurabh Gupta (M.D.Sc. Professor), Samarth Kumar Agarwal (M.D.S. Professor) Department of Prosthodontics & Dental Material Sciences, Kothiwal Dental College and Research Centre, Moradabad - 244001, India Abstract There is evidence that Dentistry was practised as …

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  • Three-dimensional microarchitected materials and devices ...

    2018-9-24 · A porous polymer-based three-dimensional (3D) cell culture device has been developed as an in vitro tissue model system for the cytotoxicity of anticancer drug test. The device had two chambers connected in tandem, each loaded with a 3D scaffold made of highly biocompatible poly (lactic acid) (PLA).

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  • Three-Dimensional Printing of a LiFePO 4 /Graphite Battery ...

    2020-1-23 · Three of these specimens (G, H, and I) were sterilized at a pressure of +1bar and a temperature of 121°C for 20 min; and three specimens (M, N, and O) were exposed to +2bar pressure and 134°C temperature for 10min. 3D scanner examination The 3D-printed drill templates were digitally scanned by using a Steinbichler Scan ST dental scanner ...

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  • Flow Analysis of a Porous Polymer-Based Three

    2021-7-9 · Parts are then made from each subsequent generation and tested for mechanical properties and accuracy showing no degradation of properties up to three generations of use. 6. HP Jet Fusion 3D Printing Solutions using HP 3D High Reusability PA 12 Glass Beads provide up to 70% powder reusability ratio, producing functional parts batch after batch.

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  • Effects of disinfection and sterilization on the ...

    A study evaluated the damage tolerance of different dental materials and showed that the damage tolerance of PICN was higher when compared to other ceramics for CAD-CAM, like veneering ceramics. 55 55. Coldea A, Fischer J, Swain MV, Thiel N. Damage tolerance of indirect restorative materials (including PICN) after simulated bur adjustments.

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  • HP 3D Printing Materials Portfolio - Expand your ...

    2021-6-14 · Protective Shells for Turbines. A photonic crystal on a glass substrate is inserted into a UV/Vis/NIR spectrometer in order to study its diffuse reflexion properties in the near infrared (NIR). The crystal (white region on the glass) is an artificially created three-dimensional opal consisting of ceramic spheres.

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  • Dental ceramics: a review of new materials and processing ...

    3D printing or additive manufacturing (AM) technologies create three-dimensional parts from computer-aided design (CAD) models by successively adding material layer by layer until physical part is created. While 3D printing technologies have been around since the 1980s, recent advances in machinery, materials, and software have made 3D printing ...

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  • Home | SFB986 - TUHH

    2021-3-24 · This section focuses on the recent progress on employing innovative wear-resistant materials in a broad range of applications, with an emphasis on aerospace components, automobile parts, wind turbines, MEMS/NEMS, AFM, and biomedical devices.

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  • 3D Printing Guide: Types of 3D Printers, Materials, and ...

    The simplest definition of a polymer is a useful chemical made of many repeating units. A polymer can be a three dimensional network (think of the repeating units linked together left and right, front and back, up and down) or two-dimensional network (think of the repeating units linked together left, right, up, and down in a sheet) or a one ...

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