Use and preparation method of alkaline coating on the surface of dental zirconia ceramics

A zirconia ceramic and dental technology, applied in the direction of dental preparations, dentistry, dental prosthesis, etc., to achieve the effects of enhancing bonding strength, improving clinical service life, and enhancing hydrolysis resistance
CN105147525BInactive Publication Date: 2018-03-27AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV
Publication Date
2018-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses the use and preparation method of an alkaline coating on the surface of dental zirconia ceramics, belonging to the technical field of dental zirconia ceramics. The coating of the present invention uses nanometer zirconium hydroxide as the main component, is prepared by a nanometer zirconium hydroxide suspension dropping method or brushing method, and is formed after a certain heat treatment procedure. The present invention can maintain a long-term stable alkaline environment on the surface of dental zirconia ceramics, and it has been proved by experiments that it can further enhance the bonding strength between dental zirconia ceramics and resin after being treated with a primer containing phosphate monomer MDP, and The bonding hydrolysis resistance has also been further improved to improve the clinical service life of the cemented zirconia all-ceramic restoration.
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Description

field of invention

[0001] The invention relates to a basic coating on the surface of a dental zirconia ceramic restoration and a preparation method thereof, belonging to the technical field of dental zirconia ceramics. Background technique

[0002] Yttria stabilized tetragonal zirconia ceramics (Y-TZP, hereinafter referred to as zirconia) (95-98% ZrO 2 , 2-5%Y 2 o 3 ) has become the most commonly used all-ceramic material in current oral restoration clinics due to its outstanding mechanical properties. However, the probability of clinical damage of zirconia is not lower than that of other ceramics. According to reports, the clinical follow-up of zirconia restorations in 2-5 years The lowest clinical success rate is only 73.9%. Among the failure reasons, there are many failures caused by the rupture of the zirconia bottom nucleus. Low-temperature aging has been found to be the main factor leading to the fragmentation of zirconia, but current technology cannot completely ov...

Claims

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