Dental grinding stone with axis and its production method

Abstract

The present invention provides a dental grindstone with a shaft and a manufacturing method thereof. The dental grindstone with a shaft is formed by mixing a bonding material and abrasive grains to form a grindstone, and fixing the grindstone to the front end of a shaft. By cutting the surface of the grindstone with a rotating grindstone with appropriate abrasive grains, the sharpness of the dental grindstone with a shaft at the beginning of use is equal to the sharpness obtained after fully grinding the object to be polished in design. The sharpness is roughly equal. As a result, the sharpness of the dental whetstone with shaft is substantially the same from when it is new until it is discarded.

Description

technical field [0001] The present invention relates to a dental grindstone with a shaft, which is used for grinding the shape correction and occlusal adjustment of a dental restoration, and a manufacturing method thereof, wherein the dental restoration is made of Inlays, crowns, or bridges made of dental alloys, dental ceramic materials, or dental synthetic resins, etc. In addition, the term "grinding" in this specification is a general term for machining a workpiece with a grindstone, and also includes machining with a large amount of grinding generally called "grinding". Background technique [0002] In the past, in order to correct the form and adjust the occlusion of inlays, crowns, bridges, etc. made of dental alloys, dental ceramic materials, and dental synthetic resins, a grinding stone was attached to the front end of a metal handle. Dental grinding stones with shafts. Dental shafted grindstones use a structure in which abrasive grains such as silicon carbide are ...

AI Technical Summary

Problems solved by technology

In addition, as another problem, there is a slight eccentricity of the dental grinding stone with a shaft attached to the shank.

Since the grinding stone with a shaft rotates at a high speed of 20,000-30,000rpm, if there is any eccentricity, it will vibrate, and it is particularly difficult to grind fine parts, etc., which is not easy to use.

[0010]However, grinding with emery cloth can only achieve the degree of removing burrs, not only cannot improve the grinding ability, but also cannot correct eccentricity. The grinding ability of the stone is very low when it is a new product, and the convenience of use is not good

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