A Digital Alignment Method Based on Tooth Root Information

Abstract

The invention relates to a digital tooth arrangement method used in the field of orthodontics, which is characterized in that the tooth root position is displayed during the tooth arrangement process through digital technology to ensure that the tooth arrangement result is within the physiological limit and make the tooth arrangement result more accurate and reasonable. The steps include: 1. Establishment of an orthodontic virtual jaw model including tooth root information; 2. Fix a point to parameterize each tooth; 3. Define a global coordinate system; 4. Arrange mandibular teeth: 1) Position the lower incisors, 2. ) Construct the bracket plane, 3) Construct the arch curve and align the teeth, 4) Construct the root plane and root surface curve, 5) Adjust the position of the tooth root; 5, Arrange the maxillary teeth: 1) Position the upper incisor, 2) Adjust the maxillary bracket 3) Construct the maxillary arch curve and arrange the teeth, 4) Adjust the position of the tooth root 6. Fine-tune the tooth arrangement results based on the collision detection.

Description

technical field [0001] The invention relates to a digital tooth arranging method used in the field of orthodontics, which is characterized by a method for displaying the tooth root position during the tooth arranging process through digital technology. Background technique [0002] At present, whether it is artificial tooth arrangement or computerized virtual tooth arrangement that has been commercialized, only the arrangement of the crown and occlusal contact are considered, and there is a lack of reference to root information, alveolar bone limits, and the relationship between the root and the craniofacial bone. its biological plausibility. Clinically, whether the tooth roots are aligned in parallel is an important criterion for evaluating the therapeutic effect. The vast majority of orthodontists observe the position of the root through the curved X-ray film during and after the treatment, but a large number of studies have confirmed that the curved X-ray film cannot acc...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiency that the existing digital tooth arrangement is crown arrangement and the tooth root cannot be arranged accurately, the present invention provides a method to establish a digital model that can display the tooth root, which can not only display the position of the tooth root in real time during the tooth arrangement process, but also can pass The setting of the bone boundary arranges the root in a more reasonable position during the tooth arrangement process

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