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Method for manufacturing zirconia cut body used for dental cutting and machining utilizing precipitant

A technology of cutting and manufacturing methods, applied in dental prostheses, dental preparations, dentistry, etc., can solve problems such as difficulty in uniformly loading molybdenum compounds

Pending Publication Date: 2021-10-12
SHOFU INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in this method, since the molybdenum compound is segregated on the surface of the porous zirconia molded body when the molybdenum solution is dried, it is difficult to uniformly support the molybdenum compound.

Method used

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  • Method for manufacturing zirconia cut body used for dental cutting and machining utilizing precipitant
  • Method for manufacturing zirconia cut body used for dental cutting and machining utilizing precipitant
  • Method for manufacturing zirconia cut body used for dental cutting and machining utilizing precipitant

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Experimental program
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Effect test

Embodiment

[0062] Hereinafter, the present invention will be described in more detail and concretely by way of examples, but the present invention is not limited thereto.

[0063] (Production of Porous Zirconia Molded Body)

[0064] The zirconia powder containing 5.5 mol% of solid solution yttrium was filled in a mold (φ100 mm), and press molding (surface pressure: 50 MPa) was performed to obtain a molded body. The obtained molded body was subjected to CIP treatment (maximum load pressure: 200 MPa, holding time: 1 minute), and then calcined in an electric furnace (1000° C., 30 minutes) to obtain a porous zirconia molded body.

[0065] (Preparation of impregnation solution)

[0066] Table 1 shows the composition of the impregnation solution. According to the composition of Table 1, 1000 g of impregnation liquid was prepared by adding a metal salt and a precipitant to ion-exchanged water, and stirring for 1 hour.

[0067] [Table 1]

[0068]

[0069] (Support of metal compound on por...

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PUM

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Abstract

The issue of the invention is to support metal without segregation on a zirconia cut body for dental cutting and machining. The zirconia cut body for dental cutting and machining has been adjusted to a hardness that enables to cut and machine by calcining at a low temperature.As a solution, the zirconia cut body for dental cutting and machining is manufactured by a method for manufacturing a zirconia cut body for dental cutting and machining, and the method includes an impregnation step of impregnating a porous zirconia molded body with an impregnating solution containing at least one metal ion and at least one precipitant, and a deposition step of decomposing the precipitant in the porous zirconia molded body to deposit a metal compound.

Description

technical field [0001] The invention relates to a method for manufacturing a zirconia workpiece for dental cutting. Background technique [0002] In recent years, the technique of fabricating prosthetic devices by cutting using dental CAD / CAM systems has spread rapidly. This makes it possible to easily fabricate a repair device by processing a workpiece made of ceramic materials such as zirconia, alumina, and lithium disilicate, or resin materials such as acrylic resins and hybrid resins. [0003] In particular, since zirconia has high strength, it is clinically used in various cases. On the other hand, since the hardness of completely sintered zirconia (hereinafter referred to as zirconia fully sintered body) is very high, it is often used to pre-sinter at a temperature lower than the complete sintering temperature and adjust to a hardness that can be cut. The zirconia cutting body is used for dental cutting, and it is fired after cutting to obtain a completely sintered b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C13/083C04B35/48C04B35/622C04B38/00C04B41/50
CPCA61C13/083C04B38/00C04B35/48C04B35/622C04B41/009C04B41/5045C04B41/5036C04B2235/3225C04B2235/602C04B2235/656C04B2235/6567C04B41/4535C04B41/0072A61K6/818A61K6/822A61K6/824A61C13/0022A61L27/427A61C13/0003A61C13/00C04B2235/3246C04B2235/604C04B2235/616C04B2235/443C04B2235/449C04B2235/3224C04B2235/3286C04B2235/3272C04B2235/3217C04B2235/9661C04B2235/9653C04B2235/75C04B35/486C04B2235/6562A61K6/60C04B38/0038C04B41/45A61K6/878A61C13/0004C04B41/455C04B41/5031
Inventor 野中和理高桥周平
Owner SHOFU INC
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