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A parametric expression method for personalized orthodontic archwires

An orthodontic arch wire and expression method technology, applied in the direction of arch wire, orthodontics, medical science, etc., can solve the individual differences of orthodontic patients, the expression of transition curve is not flexible enough, and the position of the arch wire cannot be accurately expressed and shape issues

Active Publication Date: 2019-03-12
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

However, the mathematical model of the orthodontic arch wire established according to the shape model of the dental arch does not solve the individual differences of orthodontic patients, and cannot accurately express the position and shape of any segment of the arch wire, and the expression of the transition curve is not flexible enough. It is difficult to accurately parametrically express the position and shape

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  • A parametric expression method for personalized orthodontic archwires
  • A parametric expression method for personalized orthodontic archwires
  • A parametric expression method for personalized orthodontic archwires

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Embodiment Construction

[0052] In order to make the object, technical solution and advantages of the present invention clearer, the present invention is described below through specific embodiments shown in the accompanying drawings. It should be understood, however, that these descriptions are exemplary only and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

[0053] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, the specific implementation mode adopts the following technical solutions: a parameterized expression method for personalized orthodontic archwire, which is characterized in that: the specific implementation process of the method is:

[0054] Step 1: Establishment of patient tooth coordinates

[0055] Taking the 14 common maxillary teeth as an example, the preformed orthodon...

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Abstract

The invention discloses an individual orthodontic wire parameterization expressing method, and relates to the technical field of orthodontic wire bending. According to the method, manually bending processes of orthodontic wires are referred, and a parameterization mathematic model of the orthodontic wires is built based on a dissociation and combination mode. The method is characterized by including the steps: building a tooth position coordinate of a patient; expressing a compensation value; expressing a transition curve section; converting each orthodontic wire local coordinate system and a global coordinate system; adjusting position of a bracket line segment; expressing a special function curve. A parametric mathematical model of an individual orthodontic wire first-sequence curve and a second-sequence special arch function curve is built, and necessary modeling guarantees are provided for robot bending of individual orthodontic wires.

Description

technical field [0001] The invention relates to a parameterized expression method of a personalized orthodontic archwire, belonging to the technical field of orthodontic archwire bending. Background technique [0002] The expression of archwire shape is an important basis for designing orthodontic archwire bending algorithms, and it is also a necessary prerequisite for realizing digital and automatic bending of orthodontic archwires. Due to the limitation of the shape of the bracket groove, the contact section between the arch wire and the bracket is usually a straight line segment. Due to the individual differences in the shape and position of two adjacent teeth, the shape of the transition curve of the arch wire connecting different brackets is not endless. same. According to the data information of the patient's maxillary teeth, according to the mechanism of orthodontic treatment, the straight segment of the bracket and the transition curve segment are connected in seque...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16H50/50A61C7/28
CPCA61C7/002A61C7/28G16H50/50
Inventor 姜金刚韩英帅左思浩张永德王钊霍彪
Owner HARBIN UNIV OF SCI & TECH