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  • A testing machine for dental air-turbine handpiece

    The measurement of performance characteristics of dental air turbine handpieces is of interest with respect to product comparisons, standards specifications and monitoring of bearing longevity in clinical service. Previously, however, bulky and expensive laboratory equipment was required. A portable …

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  • Optimum Design of the Dental Air-Turbine

    2020-1-22 · An air-turbine and associated air supply tube was optimized as a dental air-turbine handpiece system. The system consists of an air-turbine with an impeller and a housing, and an air supply tube which supplies compressed-air to the air-turbine. The flow characteristics of the dental air-turbine handpiece system were …

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  • Factors Affecting Dental Air-Turbine Handpiece

    2012-7-1 · Air-turbine handpieces have been used for most dental cutting procedures for more than 50 years since the invention of the Borden Air rotor in 1957. 1 Although some improvements such as push-button bur release, swivel coupling, and fiber-optic illumination have made it more convenient for use, the main component, a turbine …

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  • The performance of air-turbine handpieces in

    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 …

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  • Characterizing the performance of dental air

    2008-1-1 · Although such particles are generated by polishing lathes, air-abrasive prophylaxis equipment, ultrasonic scalers, and air–water syringes, air-turbine handpieces are among the most prolific producers of aerosols. 103 About 95% of the particles in dental aerosols have a diameter of less than 5 µm 104, 105 and may be …

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  • MICROBIOLOGICAL EVALUATION OF DENTAL AIR

    2018-6-11 · Dental air-turbine handpieces might har-bor microorganisms on their irregular sur-faces. Although no documented cases of disease transmission have been associated with high-speed dental handpieces, low-speed handpiece components used in-traorally, or prophy angles, sterilization between patients …

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  • A testing machine for dental air-turbine handpiece

    A portable test machine is described for determining three key characteristics of dental air-turbine handpieces: free-running speed, stall …

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  • A Numerical Study on Performance of Dental Air

    the bur is applied to the teeth. Usually, high speed air-tur-bine dental handpieces operate at 200,000 to 400,000 revo-lutions per minute [5]. The main part of the dental air turbine is its high speed rotor head consisting of a casing with air inlet and outlet nozzles, impeller, spindle, chuck and bear-ings in millimeter size, as shown …

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  • Optimum Design of a Saw-Tooth-Shaped Dental

    To improve the torque of dental air turbine handpieces, a single nozzle of the tangential inlet was adopted by Makhsuda Juraeva et al., [14] [15] [16] and the outer diameter of the turbine was 5 ...

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  • Failure analysis of the ball bearings of dental air ...

    2013-12-3 · Introduction. Air turbine dental handpieces have been widely used since their introduction in the 1950s, 1, 2 in which high‐speed ball bearings are a critical component. Although dental ball bearings now have an excellent reputation for high speed and smooth operation, meeting or exceeding the standard ISO P4 2 or …

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  • RESTORATIVE & PROSTHETICS

    2020-11-20 · New Three-Dimensional Rotor Durability Evaluation Test (compared with previous models) 200% *Based on internal air turbine bearing durability test data These bearings enable outstanding high-speed rotation and stability and are twice as durable as existing counterparts. New Bearings Amazing power in your hands. Air Turbine …

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  • dental turbine instrument, dental turbine

    Alibaba.com offers 5,464 dental turbine instrument products. A wide variety of dental turbine instrument options are available to you, such as …

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  • Problems with the decontamination of dental

    2004-1-1 · Two types of air-driven handpieces are used in current dental practice. High-speed units usually consist of a bur, turbine and drill head, attached to air and water lines. Lower-speed units usually consist of a bur (or other device), drill head, handpiece or shank (which may be angled) and motor.

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  • Dental Chair, Dental Handpiece, Dental Oral

    The products are used in major hospitals, dental clinics, dental schools, etc. The product is positioned in the mid-to-high-end market, with product sales accounting for 58% of the domestic market and 42% of the foreign market. The main products are dental chair, dental handpieces, dental sewage treatment systems, dental suction machine, dental …

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  • Microwave assisted disinfection method in

    2011-7-27 · Rohrer & Bulard (1985) exposed dental air turbine handpieces to microwaves for 2, 4, 6, 8, 10, and 15 minutes (720W). After 25 cycles of 10 minutes, the dental handpiece tested showed no decrease in the pressure reading and no apparent alteration in sound or cutting power.

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  • Chuck assembly for dental handpieces -

    An improved positive-grip chuck assembly, particularly suitable for use with high-speed air-driven dental handpieces, in which a tubular chuck has a radially-flexible bur-clamping section provided with an external shoulder, and the bore in which the chuck is received has an internal shoulder engagable with the external shoulder of …

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  • Australian Dental Journal - Wiley

    air may invade through the tissue spaces to the deep soft tissues including the mediastinum more easily than with the use of air turbine or syringe systems for hard tissue dental treatment and oral surgery, such as tooth extraction, restorative treatment, or endodontic treatment. Dental lasers use a compressed air stream for …

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  • Evaluating splatter and settled aerosol during

    2021-1-8 · Large bore dental suction was operated by an assistant, closely following the operator's handpiece, with a flow rate of 105 L/minute of air measured using a commercial dental suction flow meter ...

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  • Performance evaluation of a dental handpiece in

    2006-8-1 · Abstract. This paper reports on the performance evaluation of a dental handpiece in simulation of clinical finishing using a novel two-degrees-of-freedom (2DOF) in vitro apparatus. The instrumented apparatus consisted of a two-dimensional computer-controlled coordinate worktable carrying a dental …

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  • COVID-19: dental aerosol contamination in open

    2021-6-25 · The COVID-19 pandemic has posed unique challenges for dental organisations with open plan clinics, particularly dental hospitals and universities. 3 Dental teaching institutions have had to adopt ...

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  • dental handpiece turbine - Alibaba.com

    About products and suppliers: Alibaba.com will help you put a full stop on your search of the safest dental handpiece turbine.It has an awesome selection of dental handpiece turbine to offer you, at affordable rates.dental handpiece turbine are basically tools that help you carry out a successful dental treatment. They help in restoring one's dental …

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  • Dental Turbine Unit, Dental Turbine Unit direct

    High Quality Plastic Portable Dental Air Turbine Unit with Water Bottle. 40.00 - 100.00 Set. 1.0 Sets (Min. Order) Portable 2/4 Hole Dental Tube Dental Air Turbine Unit. 40.00 - 100.00 Set. 1 Set (Min. Order) Hot Sale Portable Dental Air Turbine Unit with Air Compressor. 300.00 - 600.00 Set.

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  • The effect of high-speed dental handpiece

    2021-7-12 · At 0.5 m, aerosol levels were highly elevated for the air-turbine, minimally elevated for 200K and 120K, and not elevated for 60K. Conclusions Electric micromotor handpieces which use water-jet coolant alone without compressed air produce localised (within treatment bay) droplet contamination, but are unlikely to …

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  • Dental Treatments During the COVID-19

    2020-12-29 · Routine dental treatments that produce significant amounts of aerosols, composed of saliva, blood, and tissue fluids, are considered to be at high risk for the spread of the virus, as it can spread via airborne transmission. Such treatments include the use of a turbine handpiece, air–water syringes, and …

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  • Numerical Simulation and Experimental Study of a

    Dental air turbine handpieces have been widely used in clinical dentistry for over 30 years, however, little work has been reported on their performance. In dental air turbine handpieces, the types of flow channel and turbine blade shape can have very different designs. These different designs can have major influence on the torque, …

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  • Dental Materials Journal - J-STAGE

    We examined the effects of air pressure on the free-running speed of air-bearing and torque-type ball-bearing air-turbine handpieces. The air pressure for the former should be kept at a certain high level to maintain the stable super-thin air-bearing film and to provide the quasi-constant speed of around 420, 000 to 480, 000rpm. …

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  • High speed handpieces. - Abstract - Europe PMC

    2014-2-26 · As the years passed manufacturers came out with the three hole handpiece and the third one acted as a vent to let out the excess air that is collected in the head of the handpiece so that the coast speed is substantially reduced and the bur comes to a halt at the earliest. Today manufacturers have come out with 4 and 6 hole handpieces …

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  • Summary of: Operator's ability at assessing a high

    Background The 'high-speed' (air turbine) handpiece is used extensively across many dental disciplines and the ability of clinicians to detect faulty handpieces is essential.. Aim The primary aim ...

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  • Australian Dental Journal - Wiley

    air may invade through the tissue spaces to the deep soft tissues including the mediastinum more easily than with the use of air turbine or syringe systems for hard tissue dental treatment and oral surgery, such as tooth extraction, restorative treatment, or endodontic treatment. Dental lasers use a compressed air stream for …

    Get Price
  • COVID-19: dental aerosol contamination in open

    2021-6-25 · The COVID-19 pandemic has posed unique challenges for dental organisations with open plan clinics, particularly dental hospitals and universities. 3 Dental teaching institutions have had to adopt ...

    Get Price
  • Dental Turbine Unit, Dental Turbine Unit direct

    High Quality Plastic Portable Dental Air Turbine Unit with Water Bottle. 40.00 - 100.00 Set. 1.0 Sets (Min. Order) Portable 2/4 Hole Dental Tube Dental Air Turbine Unit. 40.00 - 100.00 Set. 1 Set (Min. Order) Hot Sale Portable Dental Air Turbine Unit with Air Compressor. 300.00 - 600.00 Set.

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  • BELIEF Push Button Air Turbine Handpieces

    High quality BELIEF Push Button Air Turbine Handpieces 4000rpm from China, China's leading Push Button Air Turbine Handpieces product, with strict quality control BELIEF Air Turbine Handpieces factories, producing high quality Dental Endo Handpiece 4000rpm products.

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  • ABSTRACT: Evolution of Bacterial Suckback in

    Sterilization of air turbine handpieces is standard protocol in dental practice. This study shows that some sterilized handpieces can exhaust contaminated air into the tray table or inside the dental unit, thus creating an unhealthy work environment for dentists, dental assistants and hygienists. The study was conducted in two series.

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  • Dental Handpieces - Zhengzhou Smile Dental

    China Dental Handpieces catalog of High Speed Air Turbine (NSK PANA AIR), Fiber Optic Handpiece with Kavo Type Coulping provided by China manufacturer - Zhengzhou Smile Dental Equipment Co., Ltd., page1.

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  • Health Management and Leadership Portal |

    Description: Turbine handpiece TG 637M belongs to the group of turbines without light TG 637. It is high performance turbine handpiece with push button system of drill-bit fixation and three-jets cooling system. Turbine handpiece has built-in high quality ceramic bearings. Body of handpiece is fully...

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  • OPTIMUM DESIGN OF THE AIR-TURBINE FOR THE

    2017-4-4 · The high-speed dental air-turbine handpieces were developed to remove dental caries and for cavity preparation. The dental handpieces are largely divided into three parts: head, neck and body. The air-turbine is located at the head while the air tube which is inside the body is connected to the head to supply the compressed-air…

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  • Numerical Simulation and Experimental Study of a

    Dental air turbine handpieces have been widely used in clinical dentistry for over 30 years, however, little work has been reported on their performance. In dental air turbine handpieces, the types of flow channel and turbine blade shape can have very different designs. These different designs can have major influence on the torque, …

    Get Price
  • Failure of non-vacuum steam sterilization processes

    2018-9-12 · was only possible in the dental turbine air drive channel (diameter 2·3mm, length 80mm, volume 332ml) due to accessibility of the data logger temperature probe (dimensions 2·0 mm). The tip of the thermocouple probe was placed 45mm from the coupling end of the turbine, two air turbine handpieces …

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  • Performance evaluation of a dental handpiece in

    2006-8-1 · Abstract. This paper reports on the performance evaluation of a dental handpiece in simulation of clinical finishing using a novel two-degrees-of-freedom (2DOF) in vitro apparatus. The instrumented apparatus consisted of a two-dimensional computer-controlled coordinate worktable carrying a dental …

    Get Price
  • Managing Subcutaneous Emphysema Following

    2017-8-25 · Considering that use of high-speed air-driven handpieces is a chief cause of subcutaneous emphysema in dental settings, clinicians are advised to closely follow manufacturers’ recommendations as to proper use and maintenance, as this will help prevent complications.

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  • Dental Air Turbine Performance Study Using CFD

    Dental air turbine handpieces have been widely used in clinical dentistry for over 30 years, however, little work has been reported on their performance. In dental air turbine handpieces, the types of flow channel and turbine blade shape can have very different designs.

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  • JADA LANDMARK SERIES - American Dental

    2014-10-20 · the air turbine, this ratio was reversed. We had to guard against the tendency to prepare more teeth than we could restore in a given appointment time. More time and attention to detail enabled the operator to fabricate better-quality restorations. Dr. Eshleman: Prior to the advent of the air-turbine handpieces, all dental …

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  • Hunan Jingme Dental Handpiece co., LTD.

    2021-1-22 · Hunan Jinme dental handpiece Co., Ltd. is a new enterprise specialized in producing and selling precise dental high-speed handpieces, low-speed handpieces with advanced technology. Our Company will provide perfect service, excellent quality and best price to agents and distributors. We have three kinds main products: first, air turbine …

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  • 4 Hole Dental LED Air Turbine E-generator High

    Find many great new & used options and get the best deals for 4 Hole Dental LED Air Turbine E-generator High Speed Handpiece Denshine 3 Spray at the best online prices at eBay! Free shipping for many products!

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  • Handpiece Repair Service - V&KL dental rotor

    The air motor drives the bur indirectly via a contra-angle handpiece or straight handpiece. It reaches a maximum speed of 25,000 min-1. Contra-angle handpieces are available in various step-up and step-down ratios. An air motor with a 2:1 contra-angle handpiece step-down ratio thus reaches a speed of approx. 12,500 min-1.

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  • W&H - Dental Handpieces - What should you look

    2021-7-24 · 1.4. Air Room Filters help in reducing the number of germs in the treatment room. The use of High-Efficiency Particulate Air Room Filters and Ultraviolet Treatment of ventilation system has been proven to decrease the number of air-borne infections in dental clinics. Study: Harrell S, Molinari J. Aerosols and …

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  • Aerosol in dental practices | KaVo Dental

    Dental instruments, such as high-speed handpieces use aerosol oil to make the turbine rotate at high speed and run under running water. Reference Peng, Xin and Yuqing 15 , Reference Zhao and Gao 23 The particles generated are so small that they are able to remain in the air for a long period of time before depositing on …

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  • Biosafety for Dental Patients During Dentistry

    2017-8-25 · Considering that use of high-speed air-driven handpieces is a chief cause of subcutaneous emphysema in dental settings, clinicians are advised to closely follow manufacturers’ recommendations as to proper use and maintenance, as this will help prevent complications.

    Get Price