Digital tooth arrangement method

Abstract

The digital teeth arrangement method provided by the present invention: (1) obtain the three-dimensional digital dentition by taking a model; (2) take a photo of the smile in the patient's frontal position; (3) use image processing software to remove the oral cavity surrounded by the upper and lower lips in the smile photo g Part; (4) Import the 3D digitized dentition and smile photos into the digital tooth arrangement software, and use the anatomical shape of the exposed teeth in the smile photo as a reference to adjust the size of the 3D digitized dentition to make it equal to the size of the teeth in the smile photo (5) Place the three-dimensional digitized dentition on the smile photo, adjust the position and rotation angle of the three-dimensional digitized dentition, and then lock the positional relationship between the three-dimensional digitized dentition and the smile photo to obtain the simulated smile picture h; (6) Arrange teeth according to the treatment plan and goals. The method of the present invention arranges the teeth with reference to the matching between the teeth and the whole face, especially the lip and the beautiful appearance of the smile, so as to further improve the orthodontic aesthetic effect of the digital tooth arrangement.

Description

technical field [0001] The invention belongs to the technical field of oral clinical orthodontics, in particular to a digital teeth arrangement method. Background technique [0002] Dental deformity is one of the three major diseases of the oral cavity, which not only affects the arrangement of teeth, but also affects the shape of the patient's maxillofacial region. Lips and teeth are closely related, and dentognathic deformities can lead to protruding lips, open lips and teeth, and gummy smiles, etc., affecting the appearance of patients. In order to meet the needs of treatment and precise medical treatment, digital tooth arrangement technology is gradually widely used in the field of orthodontics. Doctors can determine treatment goals through digital models, which greatly improves the accuracy of treatment. However, the traditional digital tooth arrangement technology only includes three-dimensional digital dentition, ignoring the important relationship between the teeth ...

AI Technical Summary

Problems solved by technology

However, the traditional digital tooth arrangement technology only includes three-dimensional digital dentition, ignoring the important relationship between the teeth and the face as a whole, especially the lips and the beauty of the smile. Therefore, the position of the midline of the upper dentition cannot be determined according to the midline of the face; the exposure of the upper front teeth in a smiling state cannot be seen when the teeth are arranged, so it is impossible to determine whether the upper front teeth need to be elongated or pressed in; the smile cannot be seen when the teeth are arranged Therefore, it is impossible to design a "smile arc" in which the incisal edge of the upper anterior teeth coincides with it... Therefore, the existing digital tooth arrangement process needs to be updated