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Method for generating virtual gums based on tooth model feature points

A tooth model and feature point technology, which is applied in the field of computer digital 3D graphics and image processing, can solve the problems of bubbles, incomplete missing, and wrinkles in the gingival model data, and achieve the effect of emphasizing printing effects and saving materials

Active Publication Date: 2020-02-21
叶轩
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Problems solved by technology

[0003] By traditionally occluding the silicone rubber of the patient and then turning the plaster model, scanning the plaster model, or using a digital intraoral scanner to directly obtain the patient's three-dimensional digital tooth model and gingival model, the tooth model data obtained have high accuracy, but the gingival model data itself will be There are problems such as bubbles, wrinkles, missing and incomplete

Method used

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  • Method for generating virtual gums based on tooth model feature points
  • Method for generating virtual gums based on tooth model feature points
  • Method for generating virtual gums based on tooth model feature points

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings, and the following description is for the purpose of further explaining the present invention, rather than limiting the scope of the present invention.

[0025] The implementation concrete steps of the present invention are as follows:

[0026] Import the ordered tooth model of the whole jaw, the order of the teeth is tooth position number 17-11, 21-27, which is also the patient's right side to the left side, the vertical direction of the maxillofacial is the Z-axis direction of the world coordinate system, and the sagittal direction of the maxillofacial direction is the world The Y-axis direction of the coordinate system, such as figure 1 shown.

[0027] For each single tooth, input the sequence of 5 feature points distributed on the labial, lingual, and gingival lines, such as figure 1 As shown, the height of the generated gingiva was 15 mm.

[0...

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Abstract

The invention discloses a method for generating virtual gums based on tooth model feature points and belongs to the technical field of computer digital three-dimensional graphic image processing. Gumlines, gum bottom extension points and gum bottom edge lines are sequentially generated according to input whole-jaw single-tooth feature points and gum height, then, tooth lip and tongue side gum surfaces are generated, and if the tooth is the first tooth or the last tooth of the whole jaw, tooth far-middle sections are generated according to single-tooth feature points and gum bottom extension points. If teeth exist on the left side of single tooth with gum, lip and tongue side inter-tooth bonding surfaces and near-far-middle bonding surfaces between two teeth are generated according to feature points and extension points of left teeth and feature points and extension points of single tooth. The method can significantly increase the generation speed of virtual gums, can be applied to agomphiasis conditions, can set gum generation heights according to parameters to meet attractiveness and printing requirements, and has significant technical practicability and effects.

Description

technical field [0001] The invention belongs to the technical field of computer digitized three-dimensional graphic image processing, and relates to a method for generating virtual gums based on tooth model feature points. Background technique [0002] With the continuous development of digital oral technology, oral auxiliary diagnosis and treatment systems based on three-dimensional digital technology rely on the establishment of three-dimensional digital models of patients' teeth and gums. [0003] By traditionally occluding the silicone rubber of the patient and then turning the plaster model, scanning the plaster model, or using a digital intraoral scanner to directly obtain the patient's three-dimensional digital tooth model and gingival model, the tooth model data obtained have high accuracy, but the gingival model data itself will be There are bubbles, wrinkles, missing and incomplete problems. [0004] The invention provides a method for rapidly generating virtual g...

Claims

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Application Information

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IPC IPC(8): A61C19/04A61C7/00
CPCA61C7/002A61C19/04
Inventor 叶轩
Owner 叶轩
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