Tooth movement evaluation method under curve natural coordinate system based on alveolar bone form

Abstract

The invention relates to a tooth movement evaluation method under a curve natural coordinate system based on an alveolar bone form and belongs to the technical field of dental orthodontics. An alveolar arch curve is constructed based on the alveolar bone form, the curve natural coordinate system is constructed based on the alveolar arch curve and the alveolar bone form, and then, the coordinates, the amount of movement, and the direction of movement of a tooth are calculated on the basis of the curve natural coordinate system. The invention provides the evaluation method of the movement of the tooth relative to the alveolar bone and having a physiological significance, and the evaluation method is beneficial to more scientific, more reasonable and more accurate tooth movement scheme design and curative effect evaluation.

Description

technical field [0001] The invention belongs to the technical field of orthodontics, and in particular relates to a tooth movement evaluation method based on the curved natural coordinate system of the alveolar bone shape. [0002] technical background [0003] Orthodontic treatment usually uses fixed or invisible orthodontic technology, that is, to wear aligners to achieve malalignment. Treatment of deformities. Brackets or braces apply various types of orthodontic force to the teeth and control the movement of the teeth within the alveolar bone. The establishment of a scientific and accurate tooth movement evaluation system is of great significance for the design of treatment goals, the construction of a treatment mechanics system, and the evaluation of curative effects. [0004] In the past, tooth movement evaluation methods usually used simplified mathematical models. One common method was to establish a global Cartesian coordinate system (also known as "Cartesian" coo...

AI Technical Summary

Problems solved by technology

However, none of the prior art is aware of the above point, and is basically limited to the above two methods. In the prior art, there is no such thing as constructing a natural coordinate system of a curve based on the shape of the alveolar bone, and then performing an evaluation of the teeth based on the natural coordinate system of the curve. Mobile Approach to Evaluation

[0006] It should also be noted that although the prior art (see Patent Document 2) mentions a method based on a complete orthodontic model including a geometric model and a constitutive model of teeth, alveolar bone, and periodontal ligament, it is only used to adopt The finite element method simulates and calculates the force distribution and tooth movement of the teeth after wearing the appliance, instead of constructing a mathematical coordinate system that is in line with clinical practice to scientifically evaluate the three-dimensional movement of the teeth. For those skilled in the art They are completely different concepts

Images