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  • Machinability of high-speed enamel cutting with

    2020-3-1 · In this study, we used high-speed air-turbine handpiece and carbide burs to study the high-speed cutting of enamel under the numerical control device system and simulate enamel cutting in a clinic. The machining properties of enamel, such as the cutting force, cutting torque, specific cutting energy, and rotating speed, were measured by dynamometers, charge amplifiers, data-acquisition …

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  • Bond strength of composite resin to enamel and dentin ...

    enamel or dentin surface and then irradiation with focus mode by free hand moving was performed in vertical directions for 5 s using output power of 3.0 W (75% of water spray and 85% of air spray) for the enamel surface and output power of 2.0 W (75% of water spray and 60% of air spray) for the dentin surface. The calculated

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  • Chemical vapor deposition diamond dental burs for

    2021-7-25 · Faceted microcrystalline diamond (MCD) formed at a surface temperature between 800 and 950 °C and 1% v /v CH 4 :H 2 ratio whereas nanocrystalline diamond (NCD) formed at a surface temperature of 650–750 °C at a 1.2% v/v CH 4 :H 2 ratio. The variations in CVD parameters are summarized in Table 1.

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  • Surgical lasers and hard dental tissue | British Dental ...

    2007-4-28 · Clinically, this is seen as ejection of micro-fragments of tooth tissue within the laser plume and the change in pressure in the immediately surrounding air results in an audible 'popping' sound ...

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  • Minimally invasive judgement calls: managing

    2020-10-9 · Dentine underlying hypomineralised enamel seems to have similar adhesive properties to sound teeth, possibly explaining the low failure rates/loss of complete restorations in …

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  • Evaluating splatter and settled aerosol during

    2021-1-8 · Dental models were soaked in fluorescein for two minutes before each experiment, and four ten-millimetre diameter cotton rolls were secured to the left, right, upper and lower buccal sulci of the ...

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  • Restorative Dentistry - 2019 - International Journal of ...

    2013-2-1 · Human dental pulp stem cells (DPSCs) cell culture on Electrospun Poly(l-lactic acid) (PLLA)/multi-walled carbon nanotubes (MWNTs)/hydroxyapatite (HA) nanofibrous scaffolds with high porosity and well-controlled pore could also be used as a potential candidate scaffold in tooth tissue engineering . However, the long term effects of using MWNTs in tissue engineering are not well …

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  • Review scaffold design and stem cells for tooth ...

    2021-7-23 · Dental Update 31:602-607; Wong FSL, Kolokotsa K (2004) The cost for treating children and adolescents with injuries in permanent incisors at a Dental Hospital in United Kingdom. Dental Traumatology 20:327-333; Wong FSL, Anderson P, Fan H, Davis GR (2004) X-Ray Microtomographic Study Of Mineral Concentration Distribution In Deciduous Enamel. Oral.

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  • Ferranti Wong - Institute of Dentistry - Barts and The

    2020-11-1 · Enamel prisms are the most important structure in enamel for influencing light scattering, an important optical property.The effect of enamel prism orientation on colour shifting at the border of composite resin restorations was investigated using bovine enameland four composite resin materials (Estelite Asteria A2B, Estelite Pro A2E, Kalore E2 and Clearfil Majesty ES-2 Premium A2E) bonded …

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  • Restorative Dentistry - 2019 - International Journal of ...

    2013-2-1 · Using different dental cells, researchers with the aid of tissue engineering technique aim to build up mineralized dentin, enamel, and cementum and ultimately tooth crown with its root. Human tooth incorporates a crown façade for munching, and a root, which affixes to the central alveolar bone within the periodontal ligament.

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  • Review scaffold design and stem cells for tooth ...

    Demineralized enamel specimens were exposed to dentifrices containing 5% or 10% nano-HA, or 1100 ppm fluoride, respectively, via an intraoral appliance worn by 30 adults over a 28-day period. Treatment with all three dentifrices caused significant reduction of the lesion depth and extent of demineralization detected at baseline.

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  • Demineralization - an overview | ScienceDirect Topics

    2020-11-1 · Three types of enamel margin (non-bevel, 45-degree bevel and 45-degree reverse-bevel) and four composite resin materials (Estelite Asteria A2B, Tokuyama Dental Corp., Japan; Estelite Pro A2E, Tokuyama Dental Corp., Japan; Kalore E2, GC Corporation, Japan; and Clearfil Majesty ES-2 Premium A2E, Kuraray Noritake Dental Inc., Japan) were studied ...

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  • Current perspectives on dental adhesion: (2) Concepts

    2018-10-22 · Objective: This investigation was performed to determine quantitatively the ranges of ablation and to evaluate the morphological changes in human enamel and dentin irradiated by Er,Cr:YSGG laser with or without water spray.Summary Background Data: Recently, Er,Cr:YSGG laser has been introduced in dental clinics to remove carious dental hard tissues in anticipation of replacing …

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  • Effects of Er,Cr:YSGG Laser Irradiation in Human

    Objective: The aim of this study was to determine alterations in microhardness of crown dentin and enamel, after 2 and 12-month storage in de-ionized water, 0.2% glutaraldehyde, Hanks’ Balanced Salt Solution (HBSS), 0.1% sodium hypochlorite (NaOCl) or 0.1% thymol.

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  • Effect of storage solutions on microhardness of crown ...

    2021-6-4 · 20th century. The century is one of great advances in dental technology. In the 1950s, the first fluoride toothpastes are marketed. In the 1960s, lasers are developed. In the 1990s, new advances in esthetic dentistry emerge, including tooth-colored restorative materials, bleaching materials, veeners and …

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  • Graded viscoelastic behavior of human enamel by ...

    Cross-sectional study of sound primary dental enamel revealed hardness zonation and, in parallel, significant change in the Mg content below the prismless layer.

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  • Demineralization - an overview | ScienceDirect Topics

    Demineralized enamel specimens were exposed to dentifrices containing 5% or 10% nano-HA, or 1100 ppm fluoride, respectively, via an intraoral appliance worn by 30 adults over a 28-day period. Treatment with all three dentifrices caused significant reduction of the lesion depth and extent of demineralization detected at baseline.

    Get Price
  • Ferranti Wong - Institute of Dentistry - Barts and The

    2021-7-23 · Dental Update 31:602-607; Wong FSL, Kolokotsa K (2004) The cost for treating children and adolescents with injuries in permanent incisors at a Dental Hospital in United Kingdom. Dental Traumatology 20:327-333; Wong FSL, Anderson P, Fan H, Davis GR (2004) X-Ray Microtomographic Study Of Mineral Concentration Distribution In Deciduous Enamel. Oral.

    Get Price
  • Dentine Bonding Longevity of Modern Universal

    2019-3-4 · dental hard tissues (i.e., dentine and enamel) can be seriously compromised. This will result in gaps and marginal leakage formation, which are pathways for microleakage of oral fluids, bacteria, and enzymes penetration [3,8–10]. Such issues may translate into important clinical problems such as

    Get Price
  • Ivoclar Tetric N-Flow,by Dentalkart, Dental Clinical ...

    Vasa Denticity Private Limited - Offering Ivoclar Tetric N-Flow,by Dentalkart, Dental Clinical Equipments, डेंटल इक्विपमेंट, डेंटल इक्वीपमेंट, दंत चिकित्सा के उपकरण at Rs 787 in Delhi, Delhi. Get best price and read about company. Get contact details and address| ID: 15327344597

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  • An in vitro evaluation of selective demineralised

    2010-10-13 · Unnecessary over-preparation of carious enamel often occurs clinically during operative caries management. The working hypothesis to be investigated in this study is the potential for bio-active glass air abrasion to remove selectively only demineralised enamel in artificial enamel lesions when compared to equivalent alumina air abrasion, so potentially minimising cavity over-preparation.

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  • Choong-Ho CHOI | Chonnam National University,

    Choong-Ho Choi. This study examined the relationship between the subjective food intake of 30 food types and their objective bite force to identify the key food items within the 30 food types to ...

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  • Photo-Activated Disinfection - Oral Health Group

    Dental Caries . Dental caries is a disease that initially demineralizes the enamel and then progresses slowly into the dentin. The advancing zone of demineralization is preceded by a layer of partially demineralized dentin infected with bacteria. 2 During clinical evaluation and/or treatment, it is difficult to differentiate these two zones, and as a result, significant quantities of sound but ...

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  • 3M Science. Applied to Life. | 3M Hong Kong

    With almost 100 years of automotive industry experience, we know the nooks and crannies of auto design, manufacture and repair—from helping OEMs improve fuel economy with lightweighting solutions, to helping auto body specialists revolutionize the painting process. Body in White. Chassis and Wheels.

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  • Jayanthi Mungara's research works | Ragas Dental

    Jayanthi Mungara's 13 research works with 162 citations and 1,857 reads, including: A three-and-a-half-year-old patient with Prader-Willi syndrome: a case report on dental management with ...

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  • 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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  • Therapeutic Use of Silver Nanoparticles in the

    2020-8-12 · Dental caries is one of the major diseases of the oral cavity affecting humans worldwide. Different alternatives have been used for its control, but its incidence and prevalence are still high. On the other hand, silver has been used for centuries due to its antimicrobial properties. With advances in nanotechnology, the use and research in nanomaterials has increased, recently, and silver ...

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

    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 ...

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

    2016-11-24 · Hodson N, Dunne SM, Swift EJ (2007) Using ozone to treat dental caries. J Esthet Restor Dent 19:303–305. Article PubMed Google Scholar 8. Amaechi BT, Higham SM (2001) Eroded enamel lesion remineralization by saliva as a possible factor in the site-specificity of human dental erosion. Arch Oral Biol 46:697–703

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  • Does ozone clinically enhance the remineralizing

    2010-9-10 · Abstract – Background/Aim: The present study was undertaken to evaluate and compare the fracture strength of various restorative materials and designs used in the reattachment of anterior fractured teeth.Materials and method: Sound human maxillary central incisors were selected for the study.These teeth were fractured using universal testing machine so as to obtain Ellis class II fracture ...

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  • An evaluation of various materials and tooth

    2019-3-4 · dental hard tissues (i.e., dentine and enamel) can be seriously compromised. This will result in gaps and marginal leakage formation, which are pathways for microleakage of oral fluids, bacteria, and enzymes penetration [3,8–10]. Such issues may translate into important clinical problems such as

    Get Price
  • Dentine Bonding Longevity of Modern Universal

    2016-9-1 · The dental composite specimens required for the tests DC-1, DC-2 and DC-3 were prepared in teflon moulds and were cured using blue light: 20 s per 2 mm thickness (Radii plus, SDI Limited, Bayswater VIC, Australia).Prior to the in vitro wear tests, nanoindentation tests were carried out to obtain the mechanical properties, in particular, hardness and elastic modulus.

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  • An in vitro study of the wear behaviour of dental ...

    聯絡我們. 地址: 香港柴灣新業街8號八號商業廣場23樓. 電話: (852) 2563 5193. 傳真: (852) 2565 9537. 電郵: [email protected]

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  • Hierarchical flexural strength of enamel: transition

    2011-10-26 · 1. Introduction. Dental enamel is the highly mineralized (up to 80–90 vol%), hierarchically structured biological material that covers the crowns of teeth [].With all mammalian creatures, teeth play a vital role in the survival of the host as they are crucial for nutrition and mastication.

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  • Difference in physiological responses to sound

    2008-7-27 · The effects of sound generated by an ultrasonic dental scaler and a dental turbine on heart rate, systolic and diastolic blood pressure, and hemodynamic changes in the frontal cortex were measured and compared with those of pure tone stimulation in 17 young volunteers. Near-infrared spectroscopy and the Finapres technique were used to measure hemodynamic and cardiovascular …

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  • NLX nano|NSK-Nakanishi International

    2021-7-16 · NLX nano covers a wide speed range and is compatible with your existing optic and non-optic contra-angles. Combined with a wide range of contra-angles, it covers a speed range of 100 - 200,000 min-1, to make it suitable for any applications. Thanks to NSK know how, NLX nano has been designed to reduce weight by 20% and size by more than 25% ...

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  • Repair of dentine-related lesions without a drill or ...

    2021-7-16 · It allows one-touch bur insertion and removal without tools. The bur lock mechanism is designed so that bur retention strength increases when high loads are applied to the bur. A special coating is applied to the pusher section for even lighter and easier push button operation when exchanging burs. The Clean Head System has an anti-suck back ...

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  • Ti-Max Z Series|NSK-Nakanishi International

    In dental treatment units, valves and pressure regulators from KENDRION are used to switch air and water with some hydrogen peroxide. Proportional valves, on the other hand, are particularly well suited to precisely control or regulate the flow of air and water in the dentist element.Particular attention is paid to the choice of materials. The latter also plays an important role in the direct ...

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  • Dental Technology Solutions | Kendrion

    2010-10-13 · Unnecessary over-preparation of carious enamel often occurs clinically during operative caries management. The working hypothesis to be investigated in this study is the potential for bio-active glass air abrasion to remove selectively only demineralised enamel in artificial enamel lesions when compared to equivalent alumina air abrasion, so potentially minimising cavity over-preparation.

    Get Price
  • An in vitro evaluation of selective demineralised

    2018-4-19 · Dental Equipments, Dental Handpiece, Dental Chair, Dental Burs, Dental Curing Light, Ultrasonic Scaler, Air Compressor, Micromotor, Autoclave, Intraoral Camera Company Introduction Guangdong JINME Medical Technology Co., Ltd Is a professional manufacturer who is committed to the production and sales of dental handpieces and dental equipments.

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  • China Dental Equipments manufacturer, Dental

    2021-6-29 · Eine Turbine (engl. dental turbine) ist in der Zahnmedizin ein abgewinkeltes Präparationsinstrument, mit dem der Zahnarzt oral arbeitet. Es dient zum Bohren und Schleifen an menschlichen Zähnen und wird mit genormten Anschlüssen an eine Dentaleinheit angeschlossen. Eine Turbine kann zur konservierenden und zur prothetischen Behandlung eingesetzt werden.

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  • Turbine (Zahnmedizin) – Wikipedia

    enamel. 1. a coloured glassy substance, translucent or opaque, fused to the surface of articles made of metal, glass, etc., for ornament or protection. 2. an article or articles ornamented with enamel. 3. an enamel-like paint or varnish.

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