Glass ceramic veneer and processing method thereof

A glass-ceramic and processing method technology, applied in dentures and other directions, can solve the problems of cumbersome embedding and casting process, poor processing accuracy, low tooth fit, etc., and achieve the effect of shortening the delivery cycle, improving the production accuracy, and shortening the preparation time.

Active Publication Date: 2020-11-10
FUZHOU RUIKE BULANG MEDICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
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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 The use of zirconia materials to make veneers has a narrow audience and has gradually withdrawn from the mainstream market for veneers.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 processing method thereof
  • Glass ceramic veneer and processing method thereof

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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 comprises the following steps: scanning: scanning a tooth model or teeth in the mouth to manufacture a three-dimensional model; designing: carrying out veneering design on the three-dimensional model; cutting: cutting a glass ceramic material according to the veneering design to prepare a veneergreen body; and sintering: sintering the veneer green body to prepare the veneer. According to the processing method, the glass ceramic material is processed in a cutting and sintering combined mode,thickness requirement of an ultrathin veneer can be innovatively met, tooth grinding is not needed during a using process, and damage to teeth of a wearer is avoided. Compared with a traditional tooth-free cast porcelain veneering process, the processing method does not need to prepare wax molds, omits processing steps of numerical control equipment, has simple procedures and short preparation time, and can also improve veneer production accuracy.

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 Applications(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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