CN-121985918-A - Orthodontic device design method by correcting tooth model set by movement

Abstract

The present invention relates to a method for designing a dental orthodontic device using a computer, including a step of displaying a dentition image (S01), a step of correcting a tooth arrangement state in the dentition image (S02), a step of correcting a tooth shape in the dentition image (S03), a step of displaying the dental orthodontic device on a screen according to the corrected dentition image (S04), and a step of outputting the dental orthodontic device using a 3D printer (S05). By correcting the tooth model, the accuracy and stability of the orthodontic device design are improved.

Inventors

• Shen meiying
• Pu Chengyuan

Assignees

• 奥蒂斯株式会社

Dates

Publication Date

20260505

Application Date

20241008

Priority Date

20231012

Claims (8)

1. 1. A method of computer design of a dental orthodontic apparatus, comprising: a step (S01) of displaying a dentition image; A step (S02) of correcting the arrangement state of teeth in the dentition image; a step (S03) of correcting the shape of the tooth in the dentition image; a step (S04) of displaying the orthodontic device on a screen based on the corrected dentition image, and And outputting the orthodontic device using a 3D printer (S05).
2. 2. The method for designing a dental orthodontic apparatus using a computer of claim 1, The step (S02) includes: When a specific tooth gap is greater than or equal to a preset threshold, the tooth gap is visually marked in a preset manner, and correction is performed by filling the tooth gap.
3. 3. The method for designing a dental orthodontic apparatus using a computer of claim 1, The step (S02) includes: When a specific tooth gap is less than or equal to a preset threshold, the tooth gap is visually marked in a preset manner, and correction is performed by increasing the size of the tooth gap.
4. 4. The method for designing a dental orthodontic apparatus using a computer according to claim 2, The filling mode of the tooth gap comprises the following steps: specifying and gradually filling partial regions of the interdental space, or A filling body is selected from a plurality of filling bodies stored in advance in a computer, so that the filling body is arranged at the dental space in such a manner as to achieve filling.
5. 5. The method for designing a dental orthodontic apparatus using a computer of claim 1, The step (S03) includes: when the crown of a particular tooth is less than a predetermined threshold, the tooth is visually marked in a predetermined manner and correction is performed by automatically moving the edge line between the tooth and the gums toward the gums, or The operator designates a specific edge line, and the operator moves the designated edge line toward the gum by operating to apply correction in such a manner as to extend the dental crown.
6. 6. The method for designing a dental orthodontic apparatus using a computer of claim 1, The step (S03) includes: A step (S031) of designating an active tooth as an orthodontic object and an inactive tooth to be used for securing orthodontic force to the active tooth, and A step (S032) of adjusting the shape or volume of the undercut of the movable tooth and/or the inactive tooth.
7. 7. The method for designing a dental orthodontic apparatus using a computer of claim 6, The step (S032) includes: By filling part or all of the undercut, or By reducing or increasing the undercut volume.
8. 8. The method for designing a dental orthodontic apparatus using a computer of claim 1, further comprising: a step (S033) of designating a congestion area; A step (S034) of measuring the depth and width of the trench in the specified crowded area; And setting the crowded area as a single tooth when the depth and width of the groove are less than a preset threshold (S035).

Description

Orthodontic device design method by correcting tooth model set by movement Technical Field The present invention relates to a method for designing an orthodontic device using a computer, and more particularly, to a method for designing an orthodontic device which can more efficiently and accurately exert an orthodontic force by correcting a shape or the like of a tooth model. More particularly, the present invention relates to a program for generating and storing information on a treatment image (for example, an image such as a dentition image of a patient) by scanning an oral structure of the patient with a 3D scanner, and designing an optimal orthodontic device based on the stored dental image after setting a movement (set-up) of teeth on a screen. According to the invention, the orthodontic device with higher efficiency and precise design can be output through the 3D printer. In recent years, a method of scanning a patient's oral structure using a 3D scanner and storing related information, and then making a tooth model based on the information has been widely used. This method is a more advanced technique than the conventional method of directly modeling teeth to master the structure of the teeth of a patient. The invention is technically characterized in that a certain correction is carried out on the tooth image of a patient after set-up, so that the orthodontic device displayed according to the tooth image can exert more efficient and accurate orthodontic force. In summary, the present invention relates to a method for designing a dental orthodontic device using a computer, which is characterized in that various tooth arrangement states of a patient who needs orthodontic treatment are specifically grasped, and the arrangement and shape of teeth, etc. are previously modified or corrected at a stage before the orthodontic device is designed, so that an optimal orthodontic device is designed according to different arrangement states. Background The conventional orthodontic device is manufactured as follows. First, after grasping the structure of the oral cavity of a patient, a doctor creates a tooth model having the same shape as the teeth of the patient. It is common to make impressions of the patient's oral structures and then make tooth models from materials such as plaster. Subsequently, on the plaster dental model, a sheet-shaped (sheet-type) polyol (polyol) material is pressed at high temperature in the up-down direction by a molding machine, thereby manufacturing an orthodontic device suitable for a patient. This manufacturing method requires cooperation between a doctor and a mechanic and relies on a skilled dental mechanic to perform a lot of manual work, thus consuming time and labor, ultimately resulting in an increase in manufacturing costs of the orthodontic device. The invention aims to produce a tooth orthodontic device with more efficient and precise orthodontic force by generating and storing image information of teeth of a patient through a 3D scanner and then properly correcting the image by a computer. Korean registered patent No. 10-2489995 proposes a method of designing a transparent orthodontic device using a computer. The patent invention relates to a method for designing a transparent orthodontic device based on a dentition of a patient in a state in which an image of the dentition is displayed. However, the above-mentioned patent invention omits correction of tooth arrangement, and it is difficult to secure an optimal orthodontic force for some specific dentition, and thus it is difficult to directly apply to such dentition. To this end, the present invention aims to overcome the drawbacks of the above-mentioned patent inventions by modifying or correcting the dentition image itself of the patient at a stage prior to displaying the orthodontic device, thereby proposing a method of designing an orthodontic device capable of obtaining more efficient and accurate orthodontic forces. Disclosure of Invention Technical problem The invention relates to a method for designing an orthodontic device by correcting a tooth model, which has the technical subject that: the method specifically grasps various oral states (tooth arrangement states) of the patient, finds out the problem points in the dentition of each patient, and corrects the tooth model, so that the orthodontic device has more efficient and accurate orthodontic force, and realizes optimal orthodontic treatment of the patient according to the orthodontic force. Technical proposal In order to solve the technical problems, the present invention provides the following technical solutions: A method for designing a dental orthodontic device by using a computer includes the steps of displaying a dental arrangement image, correcting a dental arrangement state in the dental arrangement image, correcting a dental shape in the dental arrangement image, displaying the dental orthodontic device on a screen based on the corrected dental arr