Collision detection algorithm for calculating occlusion areas of upper and lower jaws

A collision detection and area technology, applied in the field of digital oral cavity, to achieve the effect of real-time acquisition, fast calculation speed and improved work efficiency

Active Publication Date: 2016-08-24
HANGZHOU MEIQI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The prior art lacks methods to correctly determi...

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  • Collision detection algorithm for calculating occlusion areas of upper and lower jaws
  • Collision detection algorithm for calculating occlusion areas of upper and lower jaws
  • Collision detection algorithm for calculating occlusion areas of upper and lower jaws

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Embodiment Construction

[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Embodiments of the present invention are as follows:

[0036] step one, figure 1 is the initial position of the upper and lower teeth, figure 2 Its maxillary teeth, its occlusal state is as follows image 3 As shown in , the position of the triangle mesh is updated in real time for the occlusal model;

[0037] Step 2, matching the triangular mesh points of the maxillary and mandibular tooth models, and screening;

[0038] For example Image 6 As shown in , the upper and lower regions are triangular mesh faces of the upper and lower jaws, respectively. Among them, for the point a of the mandible, the point c of the upper jaw is the closest point; for the point b of the mandible, the point c of the upper jaw is the closest point. Then carry out screening, the distance between point a and point c is less than the collision ...

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Abstract

The invention discloses a collision detection algorithm for calculating occlusion areas of upper and lower jaws. The collision detection algorithm comprises the following steps: updating the position of a triangular mesh of an established occlusion model in real time; pairing triangular mesh points of upper and lower jaw tooth models and carrying out screening; judging whether mutual collision occurs between the point pairs according to a normal vector; obtaining an occlusion area according to the distance between the point pairs and displaying the occlusion area. According to the collision detection algorithm, the occlusion condition and collision condition of the teeth in the tooth arrangement process can be correctly displayed, so that visual occlusion data is provided for the doctors, the calculation speed is fast and the working efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of digital oral cavity, in particular to a collision detection algorithm for calculating the occlusal area of ​​the upper and lower jaws. Background technique [0002] In recent years, digital oral technology has developed rapidly, and invisible orthodontics have gradually become popular. In the process of processing the three-dimensional digital model of teeth, it is very important to establish a correct occlusal model, which is related to the establishment of the final treatment plan. There is a lack of methods in the prior art that can correctly determine the occlusal area and its collision penetration depth. Contents of the invention [0003] In order to solve the problems in the background technology, the present invention provides a collision detection algorithm for calculating the upper and lower jaw occlusal areas, which can quickly calculate the upper and lower jaw occlusal areas and their collision penetr...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16H50/50
Inventor 田宇佳王春蝶宣梦洁
Owner HANGZHOU MEIQI TECH CO LTD
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