Dental column segmentation method and device, tooth segmentation method and device, and electronic equipment

Abstract

The invention discloses a dentition segmentation method, a tooth segmentation method and device, and electronic equipment. The method comprises steps of selecting a first type of feature points on a digitalized dentition model, the first type of feature points being grid vertexes for guiding the segmentation of each single tooth in a dentition; classifying second-class feature points in the digital dentition model according to the first-class feature points, and determining teeth to which the second-class feature points belong, the second-class feature points being grid vertexes used for representing the overall shape of the digital dentition model; and respectively combining the second type of feature points belonging to each tooth to obtain a digitalized tooth region of each single toothsegmented by the digitalized dentition model. Since the two types of feature points are integrally selected based on the digital dentition model, the classification information of the feature pointscovers the integral classification features of the digital dentition model, and even if the model has noise data, the noise data can be uniformly distributed to global data, so a single tooth can be segmented more accurately.

Description

technical field [0001] The invention relates to the technical field of orthodontics, in particular to a dentition segmentation method, a tooth segmentation method, a device and electronic equipment. Background technique [0002] Dental deformity is one of the three major diseases of the oral cavity and has a high prevalence rate. Traditional orthodontic treatment is mainly to set brackets and arch wires on the surface of the tooth list to play a role in orthodontic treatment, and to perform orthodontic treatment by twisting and pushing. For the sake of aesthetics, the appliance is transferred from the lip side to the lingual side, which cannot be seen from the outside. However, this method has higher requirements on the doctor, and the patient’s oral cavity is more damaged. Not only the foreign body sensation is enhanced, but also the cost is high. With the advancement of technology, invisible orthodontics are more and more accepted and used by patients. Invisible orthodont...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the 3D tooth segmentation methods use graphic image processing technology to extract the tooth morphological features of the jaw model to separate a single independent tooth. The boundary line and the boundary line between adjacent teeth are usually fused together, and the shape of the teeth is different, so it is difficult to obtain good segmentation results with traditional segmentation methods, especially when the patient has deformed teeth, this problem is particularly prominent

The method usually used in the existing incisor process is to manually draw or adjust the contour lines of each tooth on the digital dental model based on the experience of the designing doctor, and the accuracy of this method depends on the degree of experience of the doctor, and the accuracy is not easy ensure

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