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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

Inactive Publication Date: 2018-03-27
AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

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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 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.

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 Patents(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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