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Application and preparation method of alkaline coating on surface of dental zirconia ceramic

A technology of zirconia ceramics and zirconia hydroxide, applied in dental preparations, dentistry, dental prosthesis, etc., to achieve the effects of enhancing hydrolysis resistance, improving bonding strength, and improving bonding hydrolysis resistance

Inactive Publication Date: 2015-12-16
AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, there is no reported method to solve the hydrolysis problem of chemical bonding between MDP and zirconia

Method used

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  • Application and preparation method of alkaline coating on surface of dental zirconia ceramic
  • Application and preparation method of alkaline coating on surface of dental zirconia ceramic
  • Application and preparation method of alkaline coating on surface of dental zirconia ceramic

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Embodiment Construction

[0027] 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. Before treating dental zirconia ceramic restorations with ceramic primers containing phosphate monomer MDP that are currently on the market, first use one of the following options:

[0028] Option 1, use the prepared lye to treat the ceramic bonding surface. The lye is a suspension with a pH value between 10-14. Its components are sodium carbonate, sodium bicarbonate, and sodium hydroxide aqueous solution Any one of them is mixed with 5-10wt% zirconium hydroxide. Shake well before use, drop it on the ceramic surface, let it evaporate naturally for 1-3 minutes and then blow dry.

[0029] Option 2, configure 10-20wt% zirconium hydroxide aqueous suspension, the pH value can be between 10-14, shake well before use, apply the zirconi...

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Abstract

The invention discloses application and a preparation method of an alkaline coating on the surface of dental zirconia ceramic, and belongs to the technical field of dental zirconia ceramic. The coating disclosed by the invention is mainly prepared from nano zirconium hydroxide through a nano zirconium hydroxide suspension dropping method or brush-painting method and through a certain heat treatment process. According to the invention, an alkaline environment can be kept on the surface of the dental zirconia ceramic stably for a long time; upon tests, the bonding strength of the dental zirconia ceramic with the resin can be further enhanced after being processed with a primer coating which contains a phosphate monomer MDP, and bonding hydrolysis resistance can be further improved as well, so as to prolong the clinical service life of zirconia all-ceramic restoration after cementation.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/02C04B41/85
Inventor 谢海峰陈晨章非敏钱梦珂沈书平
Owner AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV
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