Novel dental zirconium oxide prosthesis and its preparing process

A zirconia and restoration technology, applied in the field of dental colored zirconia restoration materials and their preparation, can solve the problems of few researches on colored zirconia restorations and insufficient strength, and achieve the goal of controlling production costs and product quality. Effect
CN100484508CInactive Publication Date: 2009-05-06温宁
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
温宁
Publication Date
2009-05-06
Estimated Expiration
Not applicable · inactive patent

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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 invention belongs to the field of dental materials, in particular, the invention relates to a dental colored zirconia restoration material and a preparation method thereof. Background technique

[0002] Zirconia restorations made of tetragonal zirconia (zirconia also contains yttria or ceria 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 silicates. Their main disadvantage is that they are not strong enough. The bending strength of the prosthesis usually can only reach about 500MPa, while the fracture toughness is 5MPa m 1 / 2 about. For this reason, researches have been conducted on silicate-free ceramic materials. However, as disclosed in the Chinese patent application CN1695591A, the use of alumina c...

Claims

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