Glass-ceramic veneer and its processing method

A technology of glass ceramics and processing methods, applied in the direction of dentures, etc., can solve the problems of poor processing accuracy, cumbersome embedding and casting process, low degree of tooth fit, etc., and achieve the effects of improving manufacturing accuracy, shortening delivery cycle, and shortening preparation time.

Active Publication Date: 2022-03-08
FUZHOU RUIKE BULANG MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, this method still requires the preparation of traditional wax-type cast porcelain veneers and other processes. The embedding and casting process is cumbersome, requiring a lot of labor, poor processing accuracy, low fit with the wearer's teeth, and long delivery cycle.
In addition, this method also has wax volatilization pollution and endangers the health of operators, casting production has been banned in some areas
[0006] There is another method to process the veneer by cutting, but this method is only for zirconia veneer, because zirconia has the characteristics of good toughness, high surface hardness, and not easy to break, and it is generally believed that compared with zirconia, glass Ceramic materials have poor toughness and are easy to break, so they are not suitable for cutting, or it is difficult to achieve ultra-thin through cutting.
In addition, the transparency of zirconia materials is poor, the aesthetic performance is average, and the bonding performance is not ideal. The use of zirconia materials to make veneers has a narrow audience and has gradually withdrawn from the mainstream market for veneers.

Method used

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  • Glass-ceramic veneer and its processing method
  • Glass-ceramic veneer and its processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Present embodiment is a kind of processing method of glass-ceramic veneer, and the steps are as follows:

[0070] (1) Scanning to obtain three-dimensional data: use a three-dimensional scanner to scan the tooth model to obtain a three-dimensional image;

[0071] (2) On the virtual three-dimensional image, adopt CAD design software to design an ultra-thin veneer with a thickness of 0.3mm to obtain stl data;

[0072] (3) Output the stl data to the numerical control equipment, and use the numerical control equipment to cut the glass ceramic material and process it into a veneer body;

[0073] (4) Prepare a saturated aqueous solution of potassium iodide, dissolve silver iodide in the solution, and prepare a silver iodide solution with a mass fraction of 50%; brush the silver iodide solution with a mass fraction of 50% on the surface of the veneer body, and then put it into sintering In the furnace, bake at 850°C for 10 minutes to obtain a sintered body;

[0074] (5) After...

Embodiment 2

[0076] This embodiment is a processing method for glass-ceramic veneer, the raw materials and steps it adopts are the same as those in Embodiment 1, the difference is that in step (4), a silver iodide solution with a mass fraction of 60% is prepared; the roasting time is 8 min.

[0077] Specific steps are as follows:

[0078] (1) Scanning to obtain three-dimensional data: use a three-dimensional scanner to scan the tooth model to obtain a three-dimensional image;

[0079] (2) On the virtual three-dimensional image, adopt CAD design software to design an ultra-thin veneer with a thickness of 0.3mm to obtain stl data;

[0080] (3) Output the stl data to the numerical control equipment, and use the numerical control equipment to cut the glass ceramic material and process it into a veneer body;

[0081] (4) Prepare a saturated aqueous solution of potassium iodide, dissolve silver iodide in the solution, and prepare a silver iodide solution with a mass fraction of 50%; brush the s...

Embodiment 3

[0084] This embodiment is a processing method for glass-ceramic veneer, the raw materials and steps it adopts are the same as those in Embodiment 1, the difference is that in step (4), a silver iodide solution with a mass fraction of 70% is prepared; the roasting time is 6 min.

[0085] Specific steps are as follows:

[0086] (1) Scanning to obtain three-dimensional data: use a three-dimensional scanner to scan the tooth model to obtain a three-dimensional image;

[0087] (2) On the virtual three-dimensional image, adopt CAD design software to design an ultra-thin veneer with a thickness of 0.3mm to obtain stl data;

[0088] (3) Output the stl data to the numerical control equipment, and use the numerical control equipment to cut the glass ceramic material and process it into a veneer body;

[0089] (4) Prepare a saturated aqueous solution of potassium iodide, dissolve silver iodide in the solution, and prepare a silver iodide solution with a mass fraction of 50%; brush the s...

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Abstract

The invention relates to a glass ceramic veneer and a processing method thereof. The processing method of the glass-ceramic veneer includes the following steps: scanning: scanning the tooth model or the teeth in the mouth to make a three-dimensional model; designing: performing veneer design on the three-dimensional model; cutting: according to the veneer Cutting of glass-ceramic materials is designed to prepare veneer body; sintering: sintering the veneer body to prepare veneer. The processing method of the glass-ceramic veneer provided by the present invention adopts cutting combined with sintering to process the glass-ceramic material, and innovatively finds that it can meet the thickness requirement of the ultra-thin veneer. When using it, there is no need to grind the teeth, which avoids wearing damage to the teeth. At the same time, compared with the traditional unprepared tooth casting porcelain veneer process, there is no need to prepare a wax pattern, and the processing steps of numerical control equipment are omitted. The process is simple, the preparation time is short, and the production accuracy of the veneer can also be improved.

Description

technical field [0001] The invention relates to the field of veneer production, in particular to a glass ceramic veneer and a processing method thereof. Background technique [0002] At present, the production methods of veneers can be mainly divided into porcelain veneers and cast porcelain veneers. [0003] Porcelain veneer refers to the use of refractory porcelain technology to bake porcelain powder layer by layer, which has good aesthetics and performance, has a bionic effect, and can be as thin as 0.2mm to 0.3mm. However, the porcelain veneer process is more complicated and has higher requirements for technicians, so the price is more expensive. At the same time, the texture of the produced porcelain veneer is brittle and shrinks greatly, and it is easy to break when it falls off. [0004] Cast porcelain veneer refers to melting porcelain powder by lost wax casting method and casting by vacuum casting machine. Compared with porcelain veneer, cast porcelain veneer has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C13/083
CPCA61C13/083
Inventor 刘鸿琳林燕喃李兆梅李映德
Owner FUZHOU RUIKE BULANG MEDICAL TECH CO LTD
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