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  • [Analysing noise levels in dental environment. Air turbine ...

    Dental Air Turbine sound depends on the mechanical performance such as rotation and it is impossible to neglect connections of the sound with fluid mechanics and acoustics. Turbine sound must be considered from the standpoint of the sound pressure level and frequency component. In this study, the sound samples was measured and analysed in ...

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  • Enamel and dentine remineralization by nano

    2011-6-1 · Dental enamel comprises by 85–90 vol% of a calcium-deficient carbonate hydroxyapatite, whilst dentine contains considerably lower amounts (∼50 vol%). 37 With this in mind, in environments supersaturated with respect to apatites, quantity of dentine remineralization should be higher compared to enamel, 38 and this was corroborated by the ...

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  • Impact of Nano Hydroxyapatite, Nano Silver Fluoride and ...

    Aim: To determine the remineralization ability of NaF varnish, nano-Hydroxyapatite Serum (n-HAP) and Nano Silver Fluoride (NSF) on enamel of primary anterior teeth. Materials and methods: Incipient caries were induced in primary sound anterior teeth by storing each specimen in …

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  • Characterizing the performance of dental air-turbine ...

    2008-1-1 · The start of the modern turbine era may be 1941, when a patent claimed 25 000 rpm (417 /s) for a design using compressed air at 45 psi (310 kPa). 42 The turbine rotor was unusual: a cylinder with a circular arrangement of holes through which air jets from two nozzles were directed. In addition, ball bearings were to be used (as opposed to the ...

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  • Intracoronal stress transfer through enamel following RBC ...

    2018-10-1 · Methods. Six sound first premolar teeth, allocated into two groups (n = 3), were prepared with mesio-occlusal distal cavities.The enamel was machined at the point of maximum convexity on the outer tooth to create a vertical fin of thickness 100 μm and 0.5 mm depth to allow for synchrotron X-ray diffraction measurements. 2D diffraction patterns were used to determine crystallite orientation ...

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  • Enamel cracks caused by rotary instruments - ScienceDirect

    The power sources employed were an air turbine,* providing an ultra-high speed of 100,000 r.p.m. or above, a water turbine1' capable of providing 60,000 r.p.m., and a conventional speed belt-driven engine at 10,000 to 15,000 r.p.m. Shapes and sizes of carbide burs and diamond disks, wheels, and cylinders were se- lected on the basis of their ...

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  • Bonding Nano-filled Resin-modified Glass Ionomer to

    2011-7-1 · With the increased interest in using nano materials in dentistry, a nano-filled RMGI is now available for dental practitioners. 19 The use of the nano primer is a mandatory step to bond nano-filled RMGI to enamel and dentin. 1 Double bonding procedures to tooth substrates should be performed in the nano-filled RMGI/composite “sandwich ...

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  • Handpiece-Turbines.com: NSK Premium Autochuck

    NSK N-45S Canister Autochuck Dental Handpiece Turbine. NSK N-45S Canister Autochuck Turbine for NSK N-45S Surgical Dental Handpiece. Our replacement turbines are the perfect fit for your handpiece. For over 20 years, we have served the dental community...

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  • Applications of polyetheretherketone (PEEK) in oral ...

    2016-1-1 · Polyetheretherketone (PEEK) is a synthetic, tooth colored polymeric material that has been used as a biomaterial in orthopedics for many years , , .The monomer unit of etheretherketone monomer polymerizes via step-growth dialkylation reaction of bis-phenolates to form polyetheretherketone.A common synthesis route for PEEK is the reaction between 4,4′-difluorobenzophenone and the …

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  • Surface Enamel Remineralization: Biomimetic Apatite ...

    A new method for altered enamel surface remineralization has been proposed. To this aim carbonate-hydroxyapatite nanocrystals which mimic for composition, structure, nanodimensions, and morphology dentine apatite crystals and resemble closely natural apatite chemical-physical properties have been used. The results underline the differences induced by the use of fluoride ions and hydroxyapatite ...

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  • Enamel and dentine remineralization by nano

    2011-6-1 · Dental enamel comprises by 85–90 vol% of a calcium-deficient carbonate hydroxyapatite, whilst dentine contains considerably lower amounts (∼50 vol%). 37 With this in mind, in environments supersaturated with respect to apatites, quantity of dentine remineralization should be higher compared to enamel, 38 and this was corroborated by the ...

    Get Price
  • 1987. Prognostic diagnosis of the health status of an air ...

    air-turbine dental handpiece rotor by using sound and vibration signals Huang Yi-Cheng1, Liu Chang-Chih2, Chuo Po-Chou3 Department of Mechatronics Engineering, National Changhua University of Education, Changhua, Taiwan 1Corresponding author E-mail: [email protected], [email protected], [email protected]

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  • Enamel proteins mitigate mechanical and structural ...

    2014-5-27 · A hydrazine deproteination process was used to investigate the role of enamel proteins in the acid erosion of mature human dental enamel. Bright field high resolution transmission

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  • Classification review of dental adhesive systems: from the ...

    2017-8-1 · Smear layer. Cavity preparation alters the uppermost layer of tooth tissue, covering the tooth surface with a 1.0 μm layer of cutting debris, called smear layer (Fig. 3).However, the orifices of the dentin tubules are obstructed by debris tags which may extend into the tubule to a depth of 1–10 mm is known as smear plugs.

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  • Enamel and dentin bond strength of new simplified

    enamel and dentin of a self-adhering restorative composite and of a new self-etch adhesive used in combination with the proprietary flowable composite. Methods: 100 human molars were selected.

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  • Australian Dental Journal - Wiley Online Library

    A teflon cylinder 10 mm in diameter and 2 mm high was used for preparation of the RMGIC cylindrical specimens. Fuji Bond LC and Riva Bond LC were mixed and placed in the teflon ring without light cur-ing and then stored in total darkness for 24 h (two specimens were prepared from each RMGIC adhesive system). Two specimens of Ketac N100 primer ...

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  • Compromised dental cells viability following teeth ...

    2021-7-30 · This study aimed to assess the viability of dental cells following time-dependent carbamide peroxide teeth-whitening treatments using an in-vitro dentin perfusion assay model. 30 teeth were ...

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  • Review of research on the mechanical properties of the ...

    2014-4-18 · The maximum hardness (3.5 GPa) of enamel is located on the surface, and the hardness decreases gradually with increasing depth, whereas the enamel maintains a stable hardness of …

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  • Evaluation of Wear Resistance of Dental Chairside

    2018-11-1 · The mechanical properties of crystalline phase of glass ceramics are critical. This study aimed to evaluate wear resistance of different crystalline-reinforced dental chairside computer-aided design/computer-aided manufacturing (CAD/CAM) glass ceramics.

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  • Comparison of mechanical behaviors of enamel rod and ...

    2012-1-1 · Interrod regions exist between the enamel rods and are known to have different crystallite orientations and a higher organic content compared to the enamel rods (the intrarod regions). This study aims to characterize the mechanical properties of both regions especially the time-dependent properties by using spherical indentation. Despite the very small amount of proteins, the interrod region ...

    Get Price
  • Comparison of mechanical behaviors of enamel rod and ...

    2012-1-1 · Interrod regions exist between the enamel rods and are known to have different crystallite orientations and a higher organic content compared to the enamel rods (the intrarod regions). This study aims to characterize the mechanical properties of both regions especially the time-dependent properties by using spherical indentation. Despite the very small amount of proteins, the interrod region ...

    Get Price
  • A novel self-assembled oligopeptide amphiphile for ...

    2014-4-27 · Researchers are looking for biomimetic mineralization of ena/mel to manage dental erosion. This study evaluated biomimetic mineralization of demineralized enamel induced by a synthetic and self-assembled oligopeptide amphiphile (OPA). The results showed that the OPA self-assembled into nano-fibres in the presence of calcium ions and in neutral acidity.

    Get Price
  • Applications of polyetheretherketone (PEEK) in oral ...

    2016-1-1 · Polyetheretherketone (PEEK) is a synthetic, tooth colored polymeric material that has been used as a biomaterial in orthopedics for many years , , .The monomer unit of etheretherketone monomer polymerizes via step-growth dialkylation reaction of bis-phenolates to form polyetheretherketone.A common synthesis route for PEEK is the reaction between 4,4′-difluorobenzophenone and the …

    Get Price
  • The Nano, the Tiny Turbo Tecma Toilet

    Nano. The Tiny Turbo toilet! From the experts in macerating toilets, Nano toilet utilizes Turbine Technology to produce a powerful, clog-resistant flush. This model is the the ultimate combination of a highly efficient marine toilet and the smallest design capable …

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  • Discharge of lubricant from air turbine handpieces ...

    Objective To demonstrate and quantify the discharge of lubricating oil from high-speed air turbine handpieces whilst running. Materials and methods Dye-marked oil (Kavospray, KaVo) was used to ...

    Get Price
  • Contrast‐enhanced nano‐CT reveals soft dental tissues and ...

    2021-4-8 · Sound third molars were collected from healthy human adults and fixed in 4% buffered paraformaldehyde. To evaluate the impact of PTA in concentrations of 0.3%, 0.7% and 1% on dental soft and hard tissues for CT imaging, cementum and dentine‐pulp sections were cut, dehydrated and stained with immersion periods of 12 hours, 24 hours, 2 days or ...

    Get Price
  • SANGI Europe GmbH

    Supplying minerals, to protect and beautify your teeth. All SANGI products contain the original nano-hydroxyapatite, nano, to replenish tooth mineral and keep teeth naturally beautiful and caries-free. Our APADENT series provides overall oral care, APAGARD brand products focus on natural whiteness and gloss, while APAPRO is for ...

    Get Price
  • Performance and Internal Flow of a Dental Air Turbine ...

    An air turbine handpiece is a dental abrasive device that rotates at high speed and uses compressed air as the driving force. It is characterized by its small size, light weight, and painless abrading due to its high-speed rotation, but its torque is small and noise level is high. Thus, to improve the performance of the air turbine handpiece, we conducted a performance test of an actual ...

    Get Price
  • Honorary Professor Robert J. Wilkinson MA (Cambridge) BM ...

    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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  • Dental Handpiece Motors & Turbines for sale

    Total Ratings 9, 50.39 New. 5x Dental E-type Micro Motor Handpiece 35k RPM Lab Equipment for Low Speed. 5 out of 5 stars. (5) Total Ratings 5, 39.59 New. Dental Portable Air Turbine Unit No Compressor 4 Hole High Low Speed Handpiece. 5 out of 5 stars.

    Get Price
  • Radiated Sound From a Cross-Flow Turbine With Pitching ...

    2018-1-10 · An underwater drone turbine generator unit is currently under development. The turbine consists of three cross-flow pitching foils. While understanding single turbine lift, thrust, and torque performance in a reverberant tank with a six-component load cell, an opportunity arose to quantify its radiated sound performance since such information may have an environmental impact on marine …

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  • Fluoride and silver nanoparticles prevent enamel ...

    2020-12-22 · An array of chemotherapeutic agents have been examined as a strategy to prevent and arrest dental caries such as the use of metal ions, antimicrobials and a variety of fluoride compounds out of which Silver diamine fluoride and nano silver …

    Get Price
  • Electrochemical Properties of Human Dental Enamel

    DESPITE numerous findings that intact enamel is permeable in certain circumstances to various dyes, radioactive tracers and other chemically identifiable substances1, the ionic-sieve behaviour of ...

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  • The Nano, the Tiny Turbo Tecma Toilet

    Nano. The Tiny Turbo toilet! From the experts in macerating toilets, Nano toilet utilizes Turbine Technology to produce a powerful, clog-resistant flush. This model is the the ultimate combination of a highly efficient marine toilet and the smallest design capable …

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  • Infrasound and low frequency noise from wind turbines ...

    2011-9-22 · Oerlemans S, Sijtsma P and Méndez López B 2007 Location and quantification of noise sources on a wind turbine J. Sound Vib. 299 869–83 Crossref Google Scholar O’Neal R D, Hellweg R D and Lampeter R M 2011 Low frequency noise and infrasound from wind turbines …

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  • On sound generated aerodynamically I. General theory ...

    The sound field is that which would be produced by a static distribution of acoustic quadrupoles whose instantaneous strength per unit volume is ρv i v j + p ij - a 2 0 ρδ ij, where ρ is the density, v i the velocity vector, p ij the compressive stress tensor, and a 0 the velocity of sound outside the flow.

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  • NANO Hearing Aids Shocking Review...

    2019-1-25 · Nano claims its hearing aids contain new breakthrough nano-microchip technology and have an incredible design, comfort, sound quality, and affordable prices (90% less than traditional hearing aid prices)…

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  • 56 questions with answers in NANO CERAMICS

    2021-2-2 · Nano-material can be inhaled, swallowed, absorbed through skin, injected during medical procedures, may enter the bloodstream from the lungs and …

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  • Operative instruments in Conservative Dentistry & Endodontics

    2015-1-6 · Dental Burs A group of instruments that can turn on an axis with different speed of rotation to perform different types of work. The characteristics of this work are either cutting , abrasive, finishing or polishing. Steel burs cut human dentin at low speeds, but dulls rapidly at higher speeds or when cutting enamel …

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  • Tooth surface loss: A review of literature - ScienceDirect

    2020-2-1 · Tooth surface loss (TSL), or tooth wear (TW), is an irreversible loss of dental hard tissue, due to non-carious causes, which usually interact to produce destruction ( Bassiouny, 2012 ). TSL may be considered physiological or pathological. Physiological TSL occurs as a result of mastication and adjustment, which is required for the teeth to ...

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  • Fluoride and silver nanoparticles prevent enamel ...

    2020-12-22 · An array of chemotherapeutic agents have been examined as a strategy to prevent and arrest dental caries such as the use of metal ions, antimicrobials and a variety of fluoride compounds out of which Silver diamine fluoride and nano silver …

    Get Price
  • Machines

    Wind energy is one of the most widely used renewable energy sources in the world and has grown rapidly in recent years. However, the wind towers generate a noise that is perceived as an annoyance by the population living near the wind farms. It is therefore …

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  • A Study of the Mechanical Role of Enamel and Dentin in ...

    2013-10-8 · The dental hard tissues of a tooth are combined of enamel and dentin together. The enamel protects the dentin and comes in direct contact with food during mastication. Bite force is expressed as compression force.

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  • :: RDE :: Restorative Dentistry & Endodontics

    The enamel surfaces were fixed with acrylic resin (JET, Clássico, São Paulo, SP, Brazil) in PVC tube rings (Odeme Dental Research, Luzerna, SC, Brazil). Enamel specimens were randomly categorized into 4 experimental and 2 control groups (n = 10). Table 1 shows the experimental groups and the composition of the anticaries agents.

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  • [PDF] Dentin bond strength and degree of conversion ...

    Background The aim of this study was to investigate the effect of different concentrations of 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP) monomer in one-step self-etch experimental adhesives on dentinal microshear bond strength (µSBS), their degree of conversion and bonded micro structure. Material and Methods Composite resin cylinders (Clearfil AP-X) were bonded on human sound ...

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  • A Comparative Study of Mechanical Properties of Tooth ...

    2014-4-2 · Tooth reconstruction materials are used to reconstruct damaged teeth as well as to recover their functions. In this study, the mechanical properties of various tooth reconstruction materials were determined using test specimens of identical shape and dimension under the same compressive test condition; the hardness values of them were obtained from previous studies and compared with those …

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  • NSK-Nakanishi International

    2021-8-18 · The operation manuals on this webpage are the most current versions available at this time. All manuals are subject to change without notice. To ensure that you always have the most current manual, please check this website regularly for updates.

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  • 56 questions with answers in NANO CERAMICS

    2021-2-2 · Nano-material can be inhaled, swallowed, absorbed through skin, injected during medical procedures, may enter the bloodstream from the lungs and …

    Get Price
  • Dental Supplies, Dental Materials, Dental Supply and

    2021-8-23 · Prestige Dental Products providing low price, top-quality dental supplies, dental equipment, dental orthodontic supply, Shop the best branded of dental materials Prestige Dental …

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  • Green Design - Treehugger

    2014-10-28 · Green Design. Make your space more sustainable with the latest information on industrial design and product design.

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  • Comparison of mechanical behaviors of enamel rod and ...

    2012-1-1 · Interrod regions exist between the enamel rods and are known to have different crystallite orientations and a higher organic content compared to the enamel rods (the intrarod regions). This study aims to characterize the mechanical properties of both regions especially the time-dependent properties by using spherical indentation. Despite the very small amount of proteins, the interrod region ...

    Get Price
  • A novel self-assembled oligopeptide amphiphile for ...

    2014-4-27 · Researchers are looking for biomimetic mineralization of ena/mel to manage dental erosion. This study evaluated biomimetic mineralization of demineralized enamel induced by a synthetic and self-assembled oligopeptide amphiphile (OPA). The results showed that the OPA self-assembled into nano-fibres in the presence of calcium ions and in neutral acidity.

    Get Price
  • Applications of polyetheretherketone (PEEK) in oral ...

    2016-1-1 · Polyetheretherketone (PEEK) is a synthetic, tooth colored polymeric material that has been used as a biomaterial in orthopedics for many years , , .The monomer unit of etheretherketone monomer polymerizes via step-growth dialkylation reaction of bis-phenolates to form polyetheretherketone.A common synthesis route for PEEK is the reaction between 4,4′-difluorobenzophenone and the …

    Get Price
  • The Nano, the Tiny Turbo Tecma Toilet

    Nano. The Tiny Turbo toilet! From the experts in macerating toilets, Nano toilet utilizes Turbine Technology to produce a powerful, clog-resistant flush. This model is the the ultimate combination of a highly efficient marine toilet and the smallest design capable to offer the same comfort of bigger units.

    Get Price
  • Discharge of lubricant from air turbine handpieces ...

    Objective To demonstrate and quantify the discharge of lubricating oil from high-speed air turbine handpieces whilst running. Materials and methods Dye-marked oil (Kavospray, KaVo) was used to ...

    Get Price
  • Contrast‐enhanced nano‐CT reveals soft dental tissues and ...

    2021-4-8 · Sound third molars were collected from healthy human adults and fixed in 4% buffered paraformaldehyde. To evaluate the impact of PTA in concentrations of 0.3%, 0.7% and 1% on dental soft and hard tissues for CT imaging, cementum and dentine‐pulp sections were cut, dehydrated and stained with immersion periods of 12 hours, 24 hours, 2 days or ...

    Get Price
  • SANGI Europe GmbH

    Supplying minerals, to protect and beautify your teeth. All SANGI products contain the original nano-hydroxyapatite, nano, to replenish tooth mineral and keep teeth naturally beautiful and caries-free. Our APADENT series provides overall oral care, APAGARD brand products focus on natural whiteness and gloss, while APAPRO is for ...

    Get Price
  • Performance and Internal Flow of a Dental Air Turbine ...

    An air turbine handpiece is a dental abrasive device that rotates at high speed and uses compressed air as the driving force. It is characterized by its small size, light weight, and painless abrading due to its high-speed rotation, but its torque is small and noise level is high. Thus, to improve the performance of the air turbine handpiece, we conducted a performance test of an actual ...

    Get Price
  • Honorary Professor Robert J. Wilkinson MA (Cambridge) BM ...

    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; …

    Get Price
  • Dental Handpiece Motors & Turbines for sale

    Total Ratings 9, 50.39 New. 5x Dental E-type Micro Motor Handpiece 35k RPM Lab Equipment for Low Speed. 5 out of 5 stars. (5) Total Ratings 5, 39.59 New. Dental Portable Air Turbine Unit No Compressor 4 Hole High Low Speed Handpiece. 5 out of 5 stars.

    Get Price
  • Comparison of mechanical behaviors of enamel rod and ...

    2012-1-1 · Interrod regions exist between the enamel rods and are known to have different crystallite orientations and a higher organic content compared to the enamel rods (the intrarod regions). This study aims to characterize the mechanical properties of both regions especially the time-dependent properties by using spherical indentation. Despite the very small amount of proteins, the interrod region ...

    Get Price
  • A novel self-assembled oligopeptide amphiphile for ...

    2014-4-27 · Researchers are looking for biomimetic mineralization of ena/mel to manage dental erosion. This study evaluated biomimetic mineralization of demineralized enamel induced by a synthetic and self-assembled oligopeptide amphiphile (OPA). The results showed that the OPA self-assembled into nano-fibres in the presence of calcium ions and in neutral acidity.

    Get Price
  • Applications of polyetheretherketone (PEEK) in oral ...

    2016-1-1 · Polyetheretherketone (PEEK) is a synthetic, tooth colored polymeric material that has been used as a biomaterial in orthopedics for many years , , .The monomer unit of etheretherketone monomer polymerizes via step-growth dialkylation reaction of bis-phenolates to form polyetheretherketone.A common synthesis route for PEEK is the reaction between 4,4′-difluorobenzophenone and the …

    Get Price
  • The Nano, the Tiny Turbo Tecma Toilet

    Nano. The Tiny Turbo toilet! From the experts in macerating toilets, Nano toilet utilizes Turbine Technology to produce a powerful, clog-resistant flush. This model is the the ultimate combination of a highly efficient marine toilet and the smallest design capable to offer the same comfort of bigger units.

    Get Price
  • Discharge of lubricant from air turbine handpieces ...

    Objective To demonstrate and quantify the discharge of lubricating oil from high-speed air turbine handpieces whilst running. Materials and methods Dye-marked oil (Kavospray, KaVo) was used to ...

    Get Price
  • Contrast‐enhanced nano‐CT reveals soft dental tissues and ...

    2021-4-8 · Sound third molars were collected from healthy human adults and fixed in 4% buffered paraformaldehyde. To evaluate the impact of PTA in concentrations of 0.3%, 0.7% and 1% on dental soft and hard tissues for CT imaging, cementum and dentine‐pulp sections were cut, dehydrated and stained with immersion periods of 12 hours, 24 hours, 2 days or ...

    Get Price
  • SANGI Europe GmbH

    Supplying minerals, to protect and beautify your teeth. All SANGI products contain the original nano-hydroxyapatite, nano, to replenish tooth mineral and keep teeth naturally beautiful and caries-free. Our APADENT series provides overall oral care, APAGARD brand products focus on natural whiteness and gloss, while APAPRO is for ...

    Get Price
  • Performance and Internal Flow of a Dental Air Turbine ...

    An air turbine handpiece is a dental abrasive device that rotates at high speed and uses compressed air as the driving force. It is characterized by its small size, light weight, and painless abrading due to its high-speed rotation, but its torque is small and noise level is high. Thus, to improve the performance of the air turbine handpiece, we conducted a performance test of an actual ...

    Get Price
  • 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; …

    Get Price
  • Dental Handpiece Motors & Turbines for sale

    Total Ratings 9, 50.39 New. 5x Dental E-type Micro Motor Handpiece 35k RPM Lab Equipment for Low Speed. 5 out of 5 stars. (5) Total Ratings 5, 39.59 New. Dental Portable Air Turbine Unit No Compressor 4 Hole High Low Speed Handpiece. 5 out of 5 stars.

    Get Price