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A method and system for testing dental restoration cad and manufacturing process fit deviations

A dental restoration and manufacturing process technology, applied in the field of dental restoration production, can solve problems such as the inability to test dental restoration CAD and manufacturing process suitability deviations, and achieve the effect of ensuring production quality and efficiency

Active Publication Date: 2022-03-01
STOMATOLOGICAL HOSPITAL OF CHONGQING MEDICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method and system for testing the suitability deviation between the CAD of the dental restoration and the manufacturing process, so as to solve the problem in the prior art that the deviation of the suitability of the CAD of the dental restoration and the manufacturing process cannot be tested

Method used

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  • A method and system for testing dental restoration cad and manufacturing process fit deviations
  • A method and system for testing dental restoration cad and manufacturing process fit deviations
  • A method and system for testing dental restoration cad and manufacturing process fit deviations

Examples

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Embodiment 1

[0048] like Figure 4 As shown, the present embodiment proposes a method for testing the deviation of dental restoration CAD and manufacturing process suitability, including the following steps:

[0049] S1. Simulate oral cavity clinical construction of different forms of tooth preparation data;

[0050] S2. Import the tooth preparation data of different shapes into the CAD system, and design the restoration design data in the CAD system;

[0051]S3. According to the restoration design data, the final restoration is obtained by 3D printing wax-type casting, CNC milling or SLM technology;

[0052] S4. Use a 3D scanner to scan the tissue surface of the final restoration to obtain tissue surface data of the restoration;

[0053] S5. Import the restoration tissue surface data, tooth preparation data and restoration design data into Geomagic Studio software for fitting and registration, and calculate the suitability deviation of the tooth restoration. The restoration tissue surf...

Embodiment 2

[0083] On the basis of Example 1, this embodiment provides a system for testing the deviation of dental prosthesis CAD and suitability of the manufacturing process, and the system matches the method of Example 1.

[0084] This embodiment proposes a system for testing the deviation of dental prosthesis CAD and the suitability of the manufacturing process, including: a 3D scanner and a computer. The data model of the preparation and the tissue surface data of the final restoration are calculated to obtain the fit deviation.

[0085] In order to design a 3D scanner with a simple structure and easy to use, the 3D scanner includes: a scanning base 2 and a scanner (not shown in the figure); the scanning base 2 is used to connect the final restoration with glue; the scanner includes: a scanning box, The scanning execution part and the driving part, the scanning execution part and the driving part are installed in the scanning box, the driving part is connected with the scanning base ...

Embodiment 3

[0098] Compared with Embodiment 1, this embodiment only has a change in step S3, that is, the way of obtaining the final restoration is different.

[0099] Step S3 comprises the following steps:

[0100] S31'. Import the prosthesis design data into the CAM system, and the CAM system uses CNC milling technology to cut the hard metal disk according to the prosthesis design data to obtain the finished prosthesis (this shape can be matched with the preparation, directly Used as a dental crown, no sintering is required);

[0101] S32', the finished restoration is in the sandblasting machine, with 50μmAl 2 o 3 The tissue surface was sandblasted for 30 seconds under the air pressure of 0.5Mpa to obtain the final restoration.

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Abstract

The present invention proposes a method and system for testing the suitability deviation between the CAD of the dental restoration and the manufacturing process, wherein the method for testing the suitability deviation between the CAD of the dental restoration and the manufacturing process includes the following steps: S1, simulating different forms of oral cavity clinical construction Tooth preparation data; S2. Import the tooth preparation data of different shapes into the CAD system, and design the restoration design data in the CAD system; S3. According to the restoration design data, after casting, CNC milling or SLM technology to obtain the final restoration; S4, use the 3D scanner to scan the tissue surface of the final restoration to obtain the tissue surface data of the restoration; S5, import the tissue surface data of the restoration, tooth preparation data and restoration design data into Geomagic Studio software Fitting registration is performed, and the suitability deviation of the dental restoration is calculated. The method and system for testing the suitability deviation of the CAD of the dental restoration and the manufacturing process solve the problem in the prior art that the suitability deviation of the CAD of the dental restoration and the manufacturing process cannot be tested.

Description

technical field [0001] The invention relates to the field of dental prosthesis production, in particular to a method and a system for testing the suitability deviation between the CAD of the dental prosthesis and the manufacturing process. Background technique [0002] For a long time, the suitability of dental restorations has been widely valued by scholars as a key indicator affecting its clinical life. In actual work, technicians often receive tooth preparations in various shapes, some of which seem to be difficult to accept. But until now, both clinicians and laboratory technicians are still confused or confused about how to correctly design tooth preparations in the face of different processing technology workflows. [0003] Different from the traditional casting process to make dental restorations, selective laser melting (SLM) and computer numerical control (CNC) milling technology combine two workflows of computer-aided design (CAD) and machining (CAM). Before the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00
CPCG01B11/00
Inventor 谭发兵戴红卫马超逸喻娜胡波佟雪璐
Owner STOMATOLOGICAL HOSPITAL OF CHONGQING MEDICAL UNIV
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