Dental tooth drill

Abstract

This invention relates to a dental reamer used in dental treatment for forming a root canal, in which the dental reamer prevents digging into a root canal wall and deviation even when attached to a handpiece and driven by an engine. With this reamer, a spiral working portion is formed by grinding and cutting away a tapered rod with two oppositely faced lines, and then, the ground material left with two arcs and a center of a circle is inserted into a molding space comprised of a pair of holding jigs and support jigs to perform the twist-process. In association with the twist-process, a cutting portion and a flank portion are formed on both ends of the working portion. <IMAGE>

Description

technical field [0001] The present invention relates to a dental drill for forming a root canal, and more particularly to a dental drill suitable for forming a root canal which is mounted on a handle and driven by an engine. Background technique [0002] In dental treatment, it is sometimes necessary to cut the surface of the calcified root canal wall, and remove the cutting debris or the contents of the root canal to expose the new root canal wall to form a root canal. As tools for forming the root canal, files or drills set in various sizes are provided. [0003] The tooth file has a helical working part with a small pitch, which mainly uses push-pull operation to cut the root canal wall, and at the same time remove cutting debris or contents. The tooth drill has a twisted working part with a large pitch, which mainly cuts the root canal wall by rotating operation and removes cutting debris or contents. [0004] The root canal has a curved shape that tapers toward the ap...

AI Technical Summary

Problems solved by technology

For example, NiTi tooth files have high flexibility, but due to the characteristics of shape memory alloys, elongation and deformation rarely occur, and it is difficult to visually confirm the fatigue state of the working part

Therefore, it may be damaged suddenly during the procedure for root canal formation

[0011] In addition, when manufacturing NiTi tooth files, the working part must be processed on the material that has undergone shape memory treatment, but since the plastic working method cannot be used, when the torsion shape of the working part is to be formed, twisting processing cannot be used, and one side has to be used. A complex processing method that moves the material and the grinding device relative to each other while grinding the material

As a result, the problem of a substantial increase in manufacturing costs also arises

[0012] The engine drill, due to its insufficient flexibility, cannot cut along the root canal and deviates, or the cutting is too strong and invades the root canal wall, which cannot form a good root canal

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