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Method for acquisition of complete dentition model by computer rectification combination by sectionally taking model

A dentition model and computer technology, applied in the field of medical digitization, can solve problems such as failure to achieve the purpose, and achieve the effects of saving time, facilitating clinical model taking, and reducing the number of operations

Active Publication Date: 2016-05-25
FOURTH MILITARY MEDICAL UNIVERSITY
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

As an emerging product, the intraoral dental 3D scanner can completely replicate the situation in the patient's mouth in a time-saving and labor-saving manner. For patients with severe mouth opening restrictions, the probe of the scanner cannot enter the oral cavity, and the purpose cannot be achieved.

Method used

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  • Method for acquisition of complete dentition model by computer rectification combination by sectionally taking model
  • Method for acquisition of complete dentition model by computer rectification combination by sectionally taking model
  • Method for acquisition of complete dentition model by computer rectification combination by sectionally taking model

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with specific implementation.

[0027] Such as figure 1 As shown, a method for segmental model taking and computer registration combination to collect a complete dentition model includes the following steps:

[0028] 1) Selection of tooth position: According to the limited mouth opening of the patient, determine whether the upper and lower jaws need to be taken in sections and how many sections need to be taken. The upper jaw can be taken with a complete tray, and the lower jaw needs to be divided into two parts due to the obstruction of the tongue. Segment tooth position or three-segment tooth position model taking, when segmental model taking, at least one complete tooth position needs to be overlapped between two adjacent models for later computer matching;

[0029] 2) Production of dental molds: adopt the method of secondary mold taking, use temporary wax segmented trays, and after taking the mold...

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Abstract

A method for acquisition of a complete dentition model by computer rectification combination by sectionally taking the model comprises the following steps: 1) a tooth position is selected, 2) a dental mold is made, 3) each segment of dentition gypsum model is scanned to obtain original data, and the original data is respectively stored as an STL file, 4) reverse engineering software-Geomagic Qualify is used for segmented dentition matching by use of a computer, 5) software initial parameters are set, the STL file in the step 4 is selected, a three-dimensional modeling view is formed in the software, then sectional dentition gypsum model three-dimensional views are respectively matched with segmented models, and overlapping parts of the models can be removed by operation cutting to obtain a the complete dentition model, and 6) accuracy is verified, and according to the method, dentitions of mouth-opening-limitation other patients excluding patients with complete limitation of mouth opening (trismus) and some severe limitation of mouth opening can be collected, and reliable data can be provided for follow-up treatment and operations.

Description

technical field [0001] The invention belongs to the field of medical digitization, and in particular relates to a method for taking models in sections and collecting complete dentition models through computer registration and combination. Background technique [0002] Restricted mouth opening is a relatively common clinical symptom, which can be caused by local inflammation, trauma and tumors. [0003] According to the degree of mouth opening, clinically, mouth opening limitation is divided into four degrees (mild: about 2-2.5 cm between two horizontal fingers; moderate: about 1-2.0 cm with one horizontal finger; severe: less than about 1 cm with one horizontal finger ; completely limited mouth opening (also known as trismus). [0004] In clinical treatment, it is difficult to collect the dentition in the mouth of patients with limited mouth opening. At present, the commonly used methods for observing the patient's occlusion include impression method, imaging examination (...

Claims

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Application Information

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IPC IPC(8): A61C19/04
CPCA61C19/04
Inventor 白石柱付琳谢瑞
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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