A method for extracting lateral rotation axis location of mandibular cbct data

A technology of horizontal rotation and extraction method, which is applied in medical science, dental prosthetics, orthodontics, etc., can solve the problems of large errors, and achieve the effect of improving convenience and accuracy

Active Publication Date: 2022-06-17
施洁珺
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  • Application Information

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Problems solved by technology

In actual use, the operator will use the "experienced rotation axis" as the horizontal rotation axis. The method of determination is to determine the reference point 13mm forward from the tragus on the line connecting the patient's tragus to the external bariae, and connect the left and right sides Form a horizontal rotation axis, but this method has a large error

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  • A method for extracting lateral rotation axis location of mandibular cbct data
  • A method for extracting lateral rotation axis location of mandibular cbct data
  • A method for extracting lateral rotation axis location of mandibular cbct data

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Embodiment Construction

[0035] The patent of the present invention will be further described in detail below in conjunction with specific embodiments.

[0036] The specific embodiment of the present invention and its implementation process are as follows:

[0037] Step 1) Collect the CBCT data of the patient in the closed state and the state after occlusal insertion, and obtain the CBCT data in the open and closed state of the patient; CT0 the closed CBCT data in the closed state of the patient and the state after occlusal insertion The registration operation is performed on the open CBCT data CT1 below.

[0038] 1.1) Perform 3D reconstruction operations according to the closed-mouth CBCT data CT0 and the open-mouth CBCT data CT1, respectively, to obtain the open-mouth mandibular model M0 and the closed-mouth mandibular model M1 when the patient is closed;

[0039] 1.2) Set four pairs of fixed mark points of the maxilla as the mark points for the overlapping of the open mandible model M0 and the clo...

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Abstract

The invention discloses a lateral rotation axis positioning and extraction method of mandibular CBCT data. Collect the CBCT data of the patient in the state of closed mouth and the state after occlusal insertion, and obtain the CBCT data of the patient in the state of opening and closing; The registration operation is performed on the data; the bilateral projection plane is positioned; the rotation center of the left and right sides of the jaw is obtained through processing, and the lateral rotation axis of the mandible is obtained by connecting the line. The invention obtains a more accurate lateral rotation axis of the mandible, closer to the patient's teeth and more realistic data results, and simultaneously improves the convenience and accuracy of tooth data positioning.

Description

technical field [0001] The invention belongs to the field of oral digital model processing, a method for processing dental mandibular CBCT data, and particularly relates to a lateral rotation axis positioning and extraction method for mandibular CBCT data. [0002] technical background [0003] Computer simulation of the movement of the mandible is one of the key technologies for oral correction. The use of computer simulation of the movement of the mandible can help improve the accuracy of oral treatment and diagnosis. [0004] When the human mandible performs small opening and closing movements, the mandible will simply rotate according to a lateral rotation axis, which is also called the "hinge axis". [0005] Traditionally, the measurement of the lateral rotation axis requires the use of professional equipment such as a kinematic facebow, which takes a long time and requires the operator to have certain experience. In actual use, the operator will use the "experience rot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C7/00
CPCA61C7/002
Inventor 施洁珺
Owner 施洁珺
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