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  • Dimensional Accuracy of Dental Models for Three

    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.

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  • Comparison of cutting efficiencies between electric and ...

    2018-3-19 · The electric handpiece is more efficient at cutting various materials used in dentistry, especially ma-chinable glass ceramic, silver amalgam, and high noble alloy, than the air-turbine handpiece. (J Prosthet Dent 2010;103:101-107) Comparison of cutting efficiencies between electric and air-turbine dental handpieces

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  • Three-dimensional manufacturing methods and

    The gas turbine engine 10 may be any one of a number of different gas turbine engines offered by General Electric Company of Schenectady, N.Y., including, but not limited to, those such as a 7 or a 9 series heavy duty gas turbine engine and the like. The gas turbine engine 10 may have different configurations and may use other types of ...

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  • Three-dimensional bioactive hydrogel-based scaffolds

    2021-5-1 · Three-dimensional cultures offer several advantages, mainly due to the improved cell-to-cell interaction provided by the extracellular matrix (ECM), which supports cells and delivers nutrients, providing a structure that better resemble the in vivo condition.

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  • Three-dimensional effects and arm effects on

    2010-10-1 · Firstly, we compare the power coefficients obtained by using the numerical models (both two-dimensional and three-dimensional) with the experimental results reported by Templin .The basic specifications of the turbine are that the turbine is a one-blade turbine, the blade type is NACA0015 (curved blade, the detailed curvature can be found in Templin ), the solidity (Nc/R, where N and c …

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  • Dentist Equipment & Dental Practice Equipment |

    2021-6-27 · At KaVo, we offer our clients an exciting abundance of dental tools and dentist equipment. The availability of entry level pricing and superior engineering for highly cost-efficient operation allows even a developing dental health practice to experience the supreme quality of KaVo’s ESTETICA E30 dental chair. With its variety of operative features for convenience and highly-dependable anti …

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  • Three-Dimensional Biomimetic Mineralization of

    2019-12-12 · An electric-current-assisted method was used to mineralize dense hydrogels and create hydroxyapatite/hydrogel composites with unique hierarchical structures. The microstructure of the final material can be controlled by the mineralization technique and the chemistry of the organic matrix. A hydroxyapatite/hydrogel composite was obtained with a large inorganic content (∼60% of the weight of ...

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  • Materials for sustainable turbine engine development

    Materials for sustainable turbine engine development. Published online by Cambridge University Press: 09 April 2012. Doug Konitzer , Steve Duclos and. Todd Rockstroh. Show author details. Doug Konitzer. Affiliation: General Electric Aviation; [email protected]

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  • Materials for Aircraft Engines - Colorado

    2018-12-30 · design and manufacturing technology. These materials will be chosen based on material properties such as the low density, high strength, workability, and heat-resistant property. This paper describes the latest developments of materials for aircraft engines, mainly for the General Electric …

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  • A Navier-Stokes Analysis of Three-Dimensional

    A Navier-Stokes Analysis of Three-Dimensional Turbulent Flows Inside Turbine Blade Rows at Design and Off-Design Conditions C. Hah Fluid Mechanics and Combustion Branch, Corporate Research and Development, General Electric Company, Schenectady, N.Y. 12301

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  • Three-dimensional simulation of unsteady flows in a

    2016-5-12 · Three-dimensional numerical simulation for a prototype pump-turbine has been performed to investigate the transient characteristics and flow behaviors in the startup process. The rotational speed, which varies with runner torque and inertial of the rotating systems, is obtained by hydraulic-force coupling method.

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  • Dynamic analysis of three-dimensional drivetrain

    2014-8-1 · In our previous study, a torsional model was used to perform a dynamic analysis of a wind turbine drivetrain. However, detailed characteristics could not be obtained with this torsional model. In this paper, the mathematical model of the wind turbine drivetrain is extended to a three-dimensional dynamic model. A typical arrangement with one low-speed planetary gear stage and two highspeed spur ...

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  • ONERA three-dimensional icing model | AIAA Journal

    2012-5-17 · Prediction of Ice Shape for Three-Dimensional Engine Inlet Based on the Proper Orthogonal Decomposition Method 1 August 2014 | Advanced Materials Research, Vol. 1008-1009 Frost formation mechanism analysis and frost growth prediction on ground aircraft

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  • Comparison of crown fit and operator preferences

    2021-1-1 · The air-turbine handpiece and electric handpiece groups both displayed a homogenous surface topography without obvious grooves or peaks. Download : Download high-res image (702KB) Download : Download full-size image; Figure 6. Three-dimensional surface profile. A, Air-turbine handpiece group. B, Electric handpiece group.

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  • [An approach to the dental CAD/CAM using the

    1991-3-1 · [An approach to the dental CAD/CAM using the electric discharge machining (2). Development of the three dimensional multi functional NC machine and the machining properties by the RAM type EDM in diionized water].

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  • Operator's ability at assessing a high-speed (air

    2015-1-23 · The ability to identify the three 'unsafe' air turbine handpiece faults (broken chuck, loose spray cap and loose back cap). ... handling and use of materials' 4. ... patient burns from electric ...

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  • HET electric motor massively boosts power, torque

    2019-8-9 · The HET is a three-dimensional, circumferential flux, exterior permanent magnet electric motor with some interesting characteristics. For starters, it runs four rotors where other motors typically ...

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  • DWS Systems | Materials

    2021-6-29 · VITRA SERIES: High definition transparent materials. The Vitra series materials are developed by DWS to faithfully, solidly and accurately reproduce the characteristics of glass, crystal and plastic materials, capable of superior transparency, guaranteeing the best final performance, also in terms of dimensional stability, for single objects or components.

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  • Three-Dimensional Circuits LPKF LDS: Laser Direct ...

    the LPKF LDS process for a complex dental tool. This makes a compact design and more functionality possible. The control for the warm water and air supply and a special lighting device are integrated in the hand piece. The three-dimensional circuit comes about without cables or separate circuit boards directly on the plastic carrier.

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  • I have it—You want it! Bien-Air turbines and electric ...

    2021-6-28 · Made for your hand: Each KaVo dental turbine is the result of extensive ergonomic and anatomical studies with consistent dimensions, angles and contours for balanced handling. You can choose from the wide range of KaVo's top class dental turbines. KaVo dental turbines - The perfect interplay of hand and tool.

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  • Dental Chairs - Find a KaVo Dental Chair | KaVo

    2020-2-19 · dental practice, patients and specialists 4 Creation of photos and video sequences Optimum assessment of object structures in 3D mode The EASY view 3D’s three-dimensional mode enables easy hand-eye coordination and a natural working position. Its three-dimensional spatial representation is perfect for critically examining work objects.

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  • making work easy 1 - Renfert

    2015-1-23 · The ability to identify the three 'unsafe' air turbine handpiece faults (broken chuck, loose spray cap and loose back cap). ... handling and use of materials' 4. ... patient burns from electric ...

    Get Price
  • Operator's ability at assessing a high-speed (air

    2016-5-12 · Three-dimensional numerical simulation for a prototype pump-turbine has been performed to investigate the transient characteristics and flow behaviors in the startup process. The rotational speed, which varies with runner torque and inertial of the rotating systems, is obtained by hydraulic-force coupling method.

    Get Price
  • Three-dimensional simulation of unsteady flows in a

    2019-12-12 · An electric-current-assisted method was used to mineralize dense hydrogels and create hydroxyapatite/hydrogel composites with unique hierarchical structures. The microstructure of the final material can be controlled by the mineralization technique and the chemistry of the organic matrix. A hydroxyapatite/hydrogel composite was obtained with a large inorganic content (∼60% of the weight of ...

    Get Price
  • Three-Dimensional Biomimetic Mineralization of

    New 4* Dental Regulator Control Valve for Dental Chair Turbine Unit Tool. 4.00 to 350.88. ... ( FOR Electric Fence Energizer/pulser for CATTLE SHEEP FENCE) 140.00. Free shipping. ... Colorful Dental Orthodontic Materials Rubber Band Elastic Ligature Ties. 4.59.

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  • Cannulas™ For KaVo Multifunction and 3 ... - KaVo

    2021-6-27 · Made for your hand: Each KaVo dental turbine is the result of extensive ergonomic and anatomical studies with consistent dimensions, angles and contours for balanced handling. You can choose from the wide range of KaVo's top class dental turbines. KaVo dental turbines - The perfect interplay of hand and tool.

    Get Price
  • making work easy 1 - Renfert

    2020-2-19 · dental practice, patients and specialists 4 Creation of photos and video sequences Optimum assessment of object structures in 3D mode The EASY view 3D’s three-dimensional mode enables easy hand-eye coordination and a natural working position. Its three-dimensional spatial representation is perfect for critically examining work objects.

    Get Price
  • [An approach to the dental CAD/CAM using the

    1991-3-1 · [An approach to the dental CAD/CAM using the electric discharge machining (2). Development of the three dimensional multi functional NC machine and the machining properties by the RAM type EDM in diionized water].

    Get Price
  • KaVo ELECTROmatic Premium Review | Electric Dental

    Constant torque, controlled speed, and quiet operation are qualities that any dentist would appreciate in an electric dental handpiece. That’s why DPS evaluators were eager to try KaVo’s ELECTROmatic motor system, which offers the versatility to choose the right torque and speed for a wide range of indications.

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  • A Numerical Study on Performance of Dental Air

    2017-9-1 · For this aim, three types of dental cartridges with different blades, nozzle diameter and the gap size between air turbine and casing were analyzed. The effect of air inlet pressure on torque, total force, air density and temperature distribution were investigated using computational fluid dynamic (CFD) simulation and related graphs were extracted.

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  • Construction of a Three-dimensional Outline of the

    Background: Magnetocardiography (MCG) has the potential for collecting three-dimensional (3D) intracardiac electric information, because the magnetic field is unaffected by the shape of the lungs and torso. In the present study, we report on the generation of a 3D heart outline and conduction pathway by means of a current density map using a 64-channel SQUID system, and an evaluation of its ...

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  • US5121329A - Apparatus and method for creating

    Apparatus incorporating a movable dispensing head provided with a supply of material which solidifies at a predetermined temperature, and a base member, which are moved relative to each other along 'X,' 'Y,' and 'Z' axes in a predetermined pattern to create three-dimensional objects by building up material discharged from the dispensing head onto the base member at a controlled rate.

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  • Standard Dental Turbine Cartridge Ceramic bearing

    2021-5-10 · For USA Buyer: ship from USA warehouse . Fast delivery (2-5 days);For Other Buyer: ship from China Warehouse. 1-3 weeks delivery.. SKU: 180305 Introduction for dental handpiece cartridge: This is new high brand dental cartridge With Ceramic Bearing. And this cartridge also can be used into many kinds of handpieces.

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  • Handpiece maintenance 101 | Dental Economics

    2019-9-9 · Three-dimensional (3D) cell culture systems have gained increasing interest in drug discovery and tissue engineering due to their evident advantages in providing more physiologically relevant information and more predictive data for in vivo tests.In this review, we discuss the characteristics of 3D cell culture systems in comparison to the two-dimensional (2D) monolayer culture, focusing on ...

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  • Three-dimensional changes of the naso-maxillary

    2013-7-8 · Three-dimensional changes of the naso-maxillary complex following rapid maxillary expansion ... Thirty consecutive healthy subjects (mean age at first observation of 9.5 ± 1.8 years for males and 11.8 ± 1.7 years for females) presenting with unilateral or bilateral posterior crossbite and requiring a RME procedure as a part of their ...

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  • Construction of a Three-dimensional Outline of the

    Background: Magnetocardiography (MCG) has the potential for collecting three-dimensional (3D) intracardiac electric information, because the magnetic field is unaffected by the shape of the lungs and torso. In the present study, we report on the generation of a 3D heart outline and conduction pathway by means of a current density map using a 64-channel SQUID system, and an evaluation of its ...

    Get Price
  • Drilling for a Century | Proto Magazine

    2008-9-22 · Three years later, George F. Green introduced electricity to the device. Green’s electromagnetic-motor-powered drill was effective, but it was heavy and too expensive for most practices. Forty-five years after the introduction of the plug-in drill, the modern air-turbine-engine dental drill was developed in 1953, increasing rpms to 50,000.

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  • Frontiers of Additive Manufacturing Research and Education

    2014-5-1 · Additive manufacturing (AM), the process of joining materials to make objects from three-dimensional (3D) model data, usually layer by layer, is distinctly different from and has many advantages over traditional manufacturing processes. For example, customized and personalized

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  • Professor Robert J K Wood | Engineering | University

    2021-6-30 · ProX SLS 6100. Production-grade nylon 3D printer delivering best-in-class part quality, fast build times and automated production tools. ProX 800. SLA quality at high throughput to address the broadest range of applications. ProJet MJP 2500/2500 Plus.

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  • The Best Industrial Metal and Plastic 3D Printers I 3D

    2020-11-23 · Malleability, a physical property, describes a metal’s ability to be formed without breaking. Pressure, or compressive stress, is used to press or roll the material into thinner sheets. A material with high malleability will be able to withstand higher pressure without breaking. 5. Elasticity, Stiffness.

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  • 3D Printing Industry-The Authority on 3D Printing ...

    2017-12-18 · Yes, it was nitro benzene inside it. Beside it function for deodorizer, it also used as basic materials for making aniline (organic compound in making aromatics). 7. Terephthalic Acid. This benzene compound is used for polyester synthetic fiber material. This is of many Uses of benzene …

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