Dental pulp opening method and device for root canal therapy

Abstract

The invention discloses a dental pulp opening method and device for root canal therapy and belongs to the technical field of oral treatment. The dental pulp opening method includes: intercepting an image of a middle position of a diseased tooth from a computed tomography slice containing a target tooth, and acquiring a three-dimensional model of the target tooth through segmenting calculation of an image slice; dividing out a root canal of the target tooth from a CT image from the target tooth, and separating out an upper-section root canal in preset length; extracting a central line of the divided root canal, and calculating a crossing point of the center and the three-dimensional model of the target tooth; taking the crossing point of the center and the three-dimensional model of the target tooth as a reference point to analyze and adjust position of a cutting-in point according to a specific image, and utilizing a navigation system to finally determine pulp opening position of the target tooth. By the dental pulp opening method and device, removing of a whole roof of a pulp chamber is not needed while position of the root canal can be found more accurately, and diameter of a pulp opening port is reduced remarkably while dentin of the side wall of the pulp chamber is preserved to greatest extent.

Description

technical field [0001] The invention relates to the technical field of oral cavity treatment, in particular to a tooth pulp opening method and device for root canal treatment. Background technique [0002] Root canal therapy is a routine means of modern oral treatment, mainly for the treatment of pulp disease and periapical disease. During the treatment process, root canal treatment includes steps such as pulp opening, root canal preparation, root canal disinfection and root canal filling. Among them, pulp opening is a key step in root canal treatment. The existing pulp opening methods include: ① removing the roof of the pulp chamber; ② removing part of the dentin on the side wall of the pulp chamber to eliminate the resistance of instruments entering the root canal. [0003] In the process of realizing the present invention, the inventor finds that there are at least the following problems in the prior art: [0004] Since the doctor cannot determine the cutting path based...

AI Technical Summary

Problems solved by technology

[0004] Since the doctor cannot determine the cutting path based on the extension of the central axis of the upper root canal in the direction of the crown of the affected tooth, it is easy to cause the design of the pulp opening to be too large during the pulp opening process, so that a lot of healthy dentin is removed unnecessarily, weakening the The resistance of tooth tissue, the affected tooth is prone to longitudinal fracture

In addition, it is easy to have inaccurate cutting position, direction and depth during the pulp opening process, which will lead to problems such as excessive pulp opening, steps and perforation on the side wall and bottom wall of the pulp chamber, etc.

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