Method for accurately matching CBCT data with STL data

An accurate matching and data technology, applied in the fields of medical science, dentistry, dental repair, etc., can solve the problems of increasing patient cost and radiation dose, increasing case time and workload, and low matching accuracy, so as to reduce clinical medical costs. cost, reduce the number of follow-up visits, and improve the effect of comfort

Active Publication Date: 2019-12-13
ZUGA MEDICAL CHENGDUCO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The disadvantages of the prior art data matching method are: the matching accuracy is not high, the operation time is very long, and even the possibility of matching failure may occur
When there are not many remaining teeth in the oral cavity, the radiation guide method must be used for matching. The patient needs to visit the doctor several times, and the radiation guide (similar to removable dentures) is prepared in advance, and then CBCT is taken, which will increase patient costs and radiation exposure virtually. dose, which also increases the time and workload of the case, making the whole process very complicated

Method used

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  • Method for accurately matching CBCT data with STL data
  • Method for accurately matching CBCT data with STL data
  • Method for accurately matching CBCT data with STL data

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Such as figure 1 , as shown in 6-10, a method for accurately matching CBCT data and STL data, when the number of remaining healthy teeth is greater than 5, the steps are:

[0068] a) Bond radio-opaque material to teeth, radio-opaque material to gingival mucosa or / and radio-opaque material to other anatomical features; on teeth, gingival mucosa or / and other anatomical features Adhesive radio-blocking material at least 4 points above (as shown in Figure 6); other anatomical features include nasal ridge, mucosal inflection, bony prominence, and lingual prominence.

[0069] b) Carry out CBCT shooting to obtain CBCT data with information of radio-blocking materials (such as Figure 7 shown);

[0070] c) Obtain the STL data of the oral cavity surface with radio-opaque material information, the method includes: 1) Take an oral impression, the radio-opaque material will leave a mark on the corresponding position of the impression material, and after the impression is hardened...

Embodiment 2

[0073] Such as figure 1 , 5 , 11-14, a method for accurately matching CBCT data and STL data, when the number of remaining healthy teeth is less than 5, includes the following steps,

[0074] a) Adhesive radiopaque material (e.g. Figure 11 shown).

[0075] b) Carry out CBCT shooting, and obtain CBCT data with information of radio-blocking materials;

[0076] c) Obtain the STL data of the oral cavity surface with radio-opaque material information: the method includes: 1) Take an oral impression, the radio-opaque material will leave a mark on the corresponding position of the impression material, and after the impression is hardened, place the radio-opaque material The material is copied to the impression, and the oral impression is scanned with the oral surface scanning device to obtain the STL data with the information of the radiation-resistant material (such as Figure 13 shown); or 2) Scan directly in the oral cavity with oral surface scanning equipment to obtain STL d...

Embodiment 3

[0079] Such as figure 2 , 3 , Shown in 4, a kind of anti-radiation material, the shape of anti-radiation material is point (such as Figure 15 shown), line (such as image 3 shown) or stripes and set on the marking tape. The dot-shaped anti-reflection material is square (such as Figure 17 shown), rhombus (such as Figure 16 shown), rectangular or polygonal (such as Figure 18 shown). The dot-shaped anti-reflection material is a single point (such as figure 2 shown), two points (such as Figure 4 shown) or a combination of multiple points. Such as image 3 As shown, during packaging, the linear radiation-blocking material 1-1 is arranged on the marking tape 2 . Such as figure 2 , 4 As shown, during packaging, the dot-shaped anti-radiation material 1 is arranged on the marking tape 2 , and a cutting line 3 is set on the marking tape 2 . According to different packaging requirements and production strategies, the radio-blocking material can be packaged in rolls,...

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Abstract

The invention relates to a method for accurately matching CBCT data with STL data, which is characterized by comprising the following steps of: a) adhering an anti-radiation material on teeth, adhering the anti-radiation material on gingival mucosa or / and adhering the anti-radiation material on other anatomical characteristics; b) carrying out CBCT shooting to obtain the CBCT data with the information of the radiation-resistant material; c) acquiring the oral cavity surface STL data; and d) matching the CBCT data with the STL data. According to the method for accurately matching the CBCT dataand the STL data, the matching precision and success rate of the CBCT data and the STL data can be greatly improved, the comfort level of a patient is improved, the number of times of re-diagnosis isreduced, the clinical medical cost is reduced, the difficulty of integrating the two kinds of data is reduced, and especially when the number of missing teeth is large, production is convenient and easy.

Description

technical field [0001] The invention relates to a method for precise matching of CBCT data and STL data, which can be applied to dental implants, orthodontics, surgery, restoration, etc., when various X-rays, panoramas, and CBCT are required. The domain in which data is organized. [0002] technical background [0003] In the dental field, in order to achieve the purpose of precise and minimally invasive surgery, guide plates are often used in implant surgery. At present, the production of guide plates must rely on three-dimensional CT or cone beam scanning CT (CBCT for short). Due to the limitations of CBCT application, CBCT can only obtain relatively clear hard tissue information such as jaws and teeth (this patent will use CBCT to obtain information for short CBCT data), but cannot obtain high-precision soft tissue information at the same time. In general, high-precision oral surface scanning equipment is used clinically to perform fine scanning of the oral tissue surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C8/00A61C19/04
CPCA61C8/009A61C19/04
Inventor 王茜李悦
Owner ZUGA MEDICAL CHENGDUCO LTD
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