Novel dental zirconium oxide prosthesis and its preparing process

A technology of zirconia and prosthetics, which is applied in the field of dental colored zirconia prosthetic materials and its preparation, can solve the problems of little research on colored zirconia prosthetics and insufficient strength, and achieve the goal of controlling production costs and product quality Effect
CN1943538AInactive Publication Date: 2007-04-11温宁
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
温宁
Publication Date
2007-04-11
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a dental prosthesis of zirconia material with tetragonal nanometer-sized ZrO2-CaO powder and much added amount of alumina. Said invention also relates to tooth body and false tooth prepared by said above tetragonal nanometer-sized ZrO2-CaO powder and zirconia material for prosthesis, so that making color transparency L*=64-81,colority a*=-1.04- 5.63 and b*=6.95-21.88,thus natural color.
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Description

Technical field

[0001] The present invention belongs to the field of dental materials. Specifically, the present invention relates to a dental colored zirconia restoration material and a preparation method thereof. Background technique

[0002] Zirconia restorations made of tetragonal zirconia (the zirconia also contains yttrium oxide or cerium oxide or both) have been widely used in the preparation of dental restoration materials. Chinese patent applications CN1103283A, CN1489988A, CN1678251A and Chinese patent CN1073840C disclose dental restorations made of glass-zirconia ceramic materials, which contain glass components mainly composed of silicate. Their main disadvantage is insufficient strength. The flexural strength of the restoration is usually only about 500MPa, while the fracture toughness is 5MPa·m 1 / 2 about. For this reason, people use non-silicate ceramic materials for research. However, as disclosed in the Chinese patent application CN1695591A, the use of alumina cer...

Claims

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