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  • Wear of human enamel against a commercial castable

    1991-2-1 · During wear test- ing, specimens were irrigated with distilled water at 37C to simulate the effect of lubrication with saliva.3 The vol- 194 FEBRUARY 1991 VOLUME 65 NUMBER 2 WEAR OF HUMAN ENAMEL AGAINST CASTABLE CERAMIC ume of enamel worn from each enamel cone was calculated from a series of readings made before and after testing un- der a ...

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  • The performance of air-turbine handpieces in general ...

    Objective: To investigate variation in performance measures of fibre-optic, high-speed air-turbine handpieces during the course of daily use in general dental practice. Materials and methods: Four groups of five new high-speed fibre-optic handpieces were used in the routine treatment of patients over a period of 30 months by four general dental practitioners in two dental practices: Groups A ...

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  • (PDF) Effect of dental handpiece lubricant on

    Methods: Three different brands of lubricant were used. Spore germination was assessed with and without lubricant in 96-well plates with spore suspension in 10% blood containing 106 Geobacillus ...

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  • Dr. Morepen Doxypen-100 - Dentalkart

    Dental Chair Metal Turbine Mac... Portable Mini Turbine Dental Unit with 2 Hole Handpiece Tubing

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  • Factors Affecting Dental Air-Turbine Handpiece

    2012-7-1 · The turbine assembly free-running speed at 2.0 bar and bearing resistance were measured at baseline and after every 10 cycles until failure using a purpose-made instrument (Darvell-Dyson Handpiece Tester, Dental Materials Science, University of Hong Kong). 14 Each test condition was applied, as appropriate, according to the following procedures.

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  • Wear prediction in dental composites - ScienceDirect

    2013-1-1 · Two-body abrasion occurs when the dental materials are abraded by sliding against the abrasive materials, e.g. silicon carbide (Rootare et al., 1979), steel (Hu et al., 1999), and enamel (Krecji et al., 1999), where the hard asperities plow and cause plastic deformation or fracture of the softer ones; three-body abrasion is known to take place ...

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  • Dental implants—the preparation of enamel, dentin,

    2020-1-1 · Enamel is the white cap on the crown of the tooth. It is the hardest substance in the body and is a calcified material with an organic content < 4%. Dentin lines the deep surface of the enamel in the crown, and continues down into the root, surrounding a central pulp cavity.

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  • Autoclave sterilization of dental handpieces: A

    2020-7-1 · 1. Introduction. In Spaulding’s classification, dental handpieces are categorized with surgical instruments as critical devices requiring sterilization for each patient .This requirement is based on the “Standard Precaution” advocated by the Centers for Disease Control and Prevention in 1996 , .According to the preventive policy of the “Standard Precaution,” blood, body fluids ...

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  • Chemical vapor deposition diamond dental burs for

    2021-7-25 · Methods. Hot Filament CVD (HFCVD) was used to deposit a thin diamond film on tungsten carbide burs using 1–1.5% methane in excess hydrogen at 1800–2200 °C and 2700 - 6700 Pa pressure. Consistent and repeated film deposition of Microcrystalline diamond (MCD) and Nano crystalline diamond (NCD) could be achieved.

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  • On the wear mechanism of human dental enamel |

    Only modest levels of enamel anisotropy were discerned; rather, our measurements suggest that enamel is a composite ceramic with the crystallites oriented in a complex three-dimensional continuum.

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  • Drug Delivery (Nano)Platforms for Oral and Dental ...

    2021-2-5 · Dental implants are commonly used in dentistry to replace missing teeth, with a 90–95% success rate. Failure of dental implants occurs because of inaccurate planning, improper surgery, and prosthesis application, material failure, and lack of maintenance. Infection is the most serious complication among the reasons for dental implant failure.

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  • W&H - Alegra Dental Turbine handpieces

    Manual lubrication. W&H Service Oil F1. W&H Service Oil F1 in a spray can is ideal for the. perfect manual lubrication of Alegra turbine handpieces. W&H Service Oil F1 cleans and lubricates your. Alegra turbine handpiece and guarantees trouble-free use. Maintenance at the. press of a button. Dental …

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  • Shear Bond Strength of Self-etching Adhesives to

    Cavities were prepared with Er,Cr:YSGG laser in group 1 and diamond burs in an air-turbine handpiece in group 2. Groups 1 and 2 were further subdivided into three subgroups of 8 teeth each, which were bonded with sixth- or seventh-generation adhesives with or without prior acid etching, followed by restoration of all samples with APX Flow.

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  • BJNANO - Exploring the retention properties of CaF2 ...

    Thus, the nano-morphology of particles has a strong influence on the mobility. The evidence that the interplay of calcium fluoride nanoparticles with the tooth enamel is so strong, makes calcium fluoride nanoparticles a promising candidate to be used in dental care products preventing teeth demineralization.

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  • EiTi Instrument Trays - Dentalkart

    Handpiece Oil Spray that provides effective lubrication and reduces debris formation. ₹1800 ₹ 490 72.8% Off (2 reviews) Woodpecker Ultrasurgery (LED) Ultrasurgery Unit With Three-Dimensional Ultrasound Oscillations For Osteotomy And Osteoplasty ... Dental Chair Metal Turbine Mac... Portable Mini Turbine Dental Unit with 2 Hole Handpiece Tubing

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  • An analysis of the physiologic parameters of intraoral ...

    2013-9-19 · The nano-hardness of resin matrix in composite is around 0.3–0.5 GPa . Feldspathic porcelain, a relatively soft dental ceramic, has a hardness value of 5.23–5.55 GPa , which can be assumed to be greater than any physiologically relevant food-simulating particle. Therefore, a third-body medium particle that is relevant for composite wear ...

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  • Discharge of lubricant from air turbine handpieces ...

    2005-5-28 · Most air turbine handpieces in use today are of the ball-bearing type and require periodic lubrication for reasons of wear reduction, reduced friction and corrosion protection.

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  • On the wear mechanism of human dental enamel |

    Accordingly, the present paper investigates in vitro the wear of human enamel in three different acidic environments.Reciprocating wear tests in which an enamel cusp slides on an enamel flat ...

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  • In vitro comparison of the cutting efficiency and ...

    Purpose: The aim of this study was to evaluate the efficacy of three dental burs in removing implant substance (titanium) and to determine the amount of heat generated by each bur. Materials and ...

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  • What is the main component of teeth? –

    2019-10-8 · What is the main component of teeth? Your teeth are composed of four dental tissues. Three of them—enamel, dentin and cementum—are hard tissues. The fourth tissue—pulp, or the center of the tooth that contains nerves, blood vessels and connective tissue—is a soft, or non-calcified, tissue.

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  • Dental implants—the preparation of enamel, dentin,

    2020-1-1 · Enamel is the white cap on the crown of the tooth. It is the hardest substance in the body and is a calcified material with an organic content < 4%. Dentin lines the deep surface of the enamel in the crown, and continues down into the root, surrounding a central pulp cavity.

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  • Mammalian dental function and wear: A review -

    2015-3-1 · Enamel is the first line of defense and the tissue most commonly considered in studies of dental fracture properties. Mammalian enamel strength comes from both its chemistry and its structural properties. It is on average about 97% mineral, almost entirely hydroxyapatite, Ca 10 (PO 4) 6 (OH) 2. The rest is water and trace amounts of organic ...

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  • Articles - International Journal of Advanced Materials ...

    Wear and tear of the dental enamel due to tribomechanical factors such as two-body abrasion and three-body abrasion has been emphasized. Dental erosion due to chemical effect and the effect of oral environments has also been considered. In addition to these, overview of wear modes and wear locations has also been covered.

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  • Study of abrasive resistance of composites for dental ...

    Three dental composites materials and human enamel were tested at 0.25 N load applied, 0.1 m/s speed ball, 7.98 m sliding distance and 22% of volume containing SiC, at room temperature. Lost ...

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  • 130+ million publications organized by topic on

    2020-9-1 · The purpose of this critical review is to list the sources of aerosol production during orthodontic standard procedure, analyze the constituent components of aerosol and their dependency on modes of grinding, the presence of water and type of bur, and suggest a method to minimize the quantity and detrimental characteristics of the particles comprising the solid matter of aerosol.

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  • Minimizing the aerosol-generating procedures in ...

    Z.R. Zhou's 207 research works with 4,500 citations and 17,162 reads, including: The effect of a time-varying contact surface on interfacial tribological behaviour via a surface groove and filler

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  • Professor Robert J K Wood | Engineering | University

    2014-5-1 · The microscopic systems that are concerned, to varying degrees, in creating friction are (1) adhesion, (2) mechanical interactions of surface asperities, (3) plowing of one surface by asperities on the other, (4) deformation and/or fracture of surface layers such as oxides, and (5) intrusion and local plastic deformation originated by third bodies, mainly agglomerated wear particles, trapped ...

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  • Biomimetic Mechanism of Action of Fluoridated

    reduce dental hypersensitivity and promote enamel rem-ineralization.1 The effectiveness of these toothpastes in promoting dentin tubule occlusion and remineralization depends not only on the fluoride content but also on the presence of other active ingredients.2 The addition of dif-

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  • KAP Survey On The Reuse Of Rotary Systems Used By

    Nyvad B, Kilian M. Comparison of the initial streptococcal microflora on dental enamel in caries-active and in caries-inactive individuals. Caries Res. 1990;24(4):267-72. Pubmed PMID: 2276164. Wan AK, Seow WK, Walsh LJ, Bird PS. Comparison of five selective media for the growth and enumeration of Streptococcus mutans. Aust Dent J. 2002 Mar;47(1 ...

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  • A Literature Review on Chewing Simulation and Wear ...

    2021-5-11 · The purpose of this review is to highlight some recent advances in our understanding of chewing simulation tests and wear mechanisms and how they contribute to material failures in the complex oral environment. Within in this study scope, as intraoral wear parameters; chewing force, tooth sliding distance, thermal change, food abrasiveness, saliva lubrication, and behavior of antagonist ...

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  • Remineralizing potential of various agents on dental ...

    1. Introduction. Dental erosion is the area of localized loss of dental hard tissue chemically etched away from the tooth surface by acid dissolution without bacterial involvement. 1 Soft drink consumption has frequently been reported to be one of the most important risk factors of dental erosion. 2 As lifestyles have changed, there has been a 50% increase in consumption of soft drinks over ...

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  • Dental handpieces, what to look for when you buy?

    I hope you will find this information useful! High speed handpieces Handpieces are the most frequently used device in restorative dentistry, but there can be a huge variation in quality, price, longevity and after-sales support depending on the supplier, brand and model of handpiece you choose. Good quality, well maintained handpieces can help your practice minimise unnecessary expenditure ...

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  • Beyond Traditional Coatings: A Review on Thermal

    2019-4-9 · Thermal spraying has been present for over a century, being greatly refined and optimized during this time. It has become nowadays a reliable and cost-efficient method to deposit thick coatings with a wide variety of feedstock materials and substrates. Thermal-sprayed coatings have been successfully applied in fields such as aerospace or electricity production, becoming an essential …

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  • Wear of MgO-CaO-SiO2-P2O5 -F-Based Glass Ceramics

    2019-8-1 · 2B dentin Noritake Dental Supply SPE2 Super porcelain EX-3 E 2 enamel Noritake Dental Supply The details of the six commercial dental materials stud-ied are given in Table 1 . The commercial dental materials were obtained in powder or pressable ingot form from the manufacturers. Three test samples of each material were fab-

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  • EiTi Cotton Holder

    Resistant to rust, corrosion and stain. Easy to keep. High durability. Description. Cotton holder is an ideal tool to hold cotton firmly in place and ensure hygienic dispensing while keeping cotton within reach during dental operating procedure. It is powered with spring action which pushes a new piece of cotton up for easy dispensing. Packaging.

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  • Events, Global Trade Shows, All Conferences,

    World's largest business event platform, find all upcoming events, business conferences, trade shows, global seminars, networking meets and workshops. Browse and connect with visitors attending, participating exhibitors and view profiles of speakers and organizers. Manage, sell event tickets and promote your event on 10times.com

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  • The Human Dental Pulp Proteome and N-Terminome:

    2019-5-25 · An underexplored yet widespread feature of the human proteome is the proteolytic proteoforms of proteins. We used terminal amine isotopic labeling of substrates (TAILS), a high-content N-terminal positional proteomics technique, for in-depth characterization of the human dental pulp proteome from its N-terminome and to provide data for the Chromosome-centric Human Proteome …

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  • Advancing the World of Health - United States | BD

    ‘Fixer to Fabulous: Welcome Inn’ Spin-Off Series Set to Launch on discovery+ in 2022 New York [July 26, 2021] HGTV picked up 16 episodes of Fixer to Fabulous, a breakout series starring renovation and design experts Dave and Jenny Marrs who overhaul historic homes in Northwest…

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  • Newsroom – Discovery, Inc.

    1999-9-10 · Supplementary. This volume contains the technical papers presented at the international symposium entitled “Processing and Fabrication of Advanced Materials VIII”, held in Singapore in 1999. This was the eighth in a series of symposia bringing together engineers and researchers from industry, academia and national laboratories, working on ...

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  • Processing and Fabrication of Advanced Materials VIII

    Cerca nel più grande indice di testi integrali mai esistito. Biblioteca personale

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  • Google Libri

    Walter Bio-Circle® Ultra. Bio-Circle® Ultra is a bio-remediating parts cleaner/degreaser that easily cuts through some of the toughest industrial contaminants including crude oil, bitumen, and heavy grease. This nontoxic, nonflammable, VOC-free formula contains no …

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  • Vallen Canada - Industry Leader in Industrial Supplies

    2020-12-18 · Significance Due to its adverse effect on the bond strength of composite to dentin, contact of hydrofluoric acid to dentin should be avoided. 1 Introduction In line with the minimally invasive dentistry approach, repair of a defective or malfunctioning restoration is the treatment of choice, if possible .

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