By Waqar Ahmed
This quantity offers chemical vapour deposition of diamond motion pictures for program in slicing instruments, microdrills, dental burs and surgical instruments. It examines numerous deposition recommendations, discusses mechanisms of diamond development and their effect on slicing instrument lifestyles and performance.
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Extra resources for Chemical Vapour Deposition of Diamond for Dental Tools and Burs
Example text
Spinning the rotor at very high speeds provides a new direction in the development of dental cutting tools. The major components of a high-speed air turbine spindle are: bearings, rotor, stator, and spindle shaft. To drive a high-speed spindle a motor, or compressor, is integrated with the spindle shaft. Bearings provide stability at high speeds to prevent chatter and poor surface finish and to permit accurate cutting tool paths. The speed of the spindle depends on the rotational speed of the rotor.
2 Tungsten Carbide WC-Co Bur Tungsten carbide is an extremely hard material, which makes it suitable for use at very high speeds. Unfortunately, associated with the additional hardness of WC, relative to stainless steel, is an increase in brittleness. Therefore only the blades of a bur should be made of tungsten carbide (the shank being made of steel). Sintering the carbide blades onto the steel shank joins the two components. Tungsten carbide is also suitable for burs designated for use at lower speeds, when they are to be used many times.
J Endod 23(12):731–734 Trava-Airoldi VJ et al (1996a) CVD diamond burs—development and applications. Diam Relat Mater 5(6):857–860 Trava-Airoldi VJ et al (1996b) Development of chemical vapor deposition diamond burs using hot filament. Rev Sci Instrum 67(5):1993–1995 Watanabe I et al (2000) Cutting efficiency of air-turbine burs on cast titanium and dental casting alloys. Dent Mater 16(6):420–425 Yared GM et al (2001) Influence of rotational speed, torque and operator’s proficiency on ProFile failures.
