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New method for treating surface of dental zirconia-based ceramic and improving bonding performance of ceramic

A zirconia-based, ceramic surface technology, applied in dentistry, dental prosthesis, medical science, etc., can solve the problems of ceramic microcracks, Y-TZP long-term negative impact on mechanical properties, etc., to improve bonding performance, Good surface roughening spatial structure, improving the effect of bonding performance

Inactive Publication Date: 2013-12-11
SOUTHEAST UNIV +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Although this method improves the bonding strength between zirconia ceramics and resin cement, sandblasting before acid etching will still cause the formation of microcracks inside the ceramic, which will inevitably have a negative impact on the long-term mechanical properties of Y-TZP

Method used

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  • New method for treating surface of dental zirconia-based ceramic and improving bonding performance of ceramic
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  • New method for treating surface of dental zirconia-based ceramic and improving bonding performance of ceramic

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Embodiment Construction

[0031] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0032] Referring to the accompanying drawings, embodiments of the present invention include:

[0033] The present invention configures the formula of acid mixed solution and the step that acid mixed solution roughens dental Y-TZP surface as follows:

[0034] h 2 SO 4 / (NH 4 ) 2 SO 4 The mixed solution is mixed at a volume ratio of 1:1;

[0035] or HF / HNO 3 The mixed solutions were mixed at a volume ratio of 1:1.

[0036] After the above acid mixture was heated to 100°C, the densely sintered dental Y-TZP restoration crown or stent was placed in the acid mixture for 30 minutes under normal pressure, and then it was taken out and rinsed with ...

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Abstract

The invention discloses a new method for treating the surface of dental zirconia-based ceramic and improving the bonding performance of the ceramic. The new method comprises the following steps: without sand-blasting treatment, immersing the dental zirconia-based ceramic into an acid-mixed solution serving as etching agent for 20-30 minutes at the temperature of 100 DEG C, and etching to realize surface roughening. The new method has the advantages that the surface roughness of the dental zirconia-based ceramic is effectively improved, the bonding strength of the dental zirconia-based ceramic with resin and veneering ceramic is improved, the microcrack is not generated in the ceramic, and the influence on long-term mechanical strength is avoided; according to the surface roughening method, high temperature or stress is not involved, so that a low-temperature attenuation effect of the dental zirconia-based ceramic is reduced, the long-term mechanical performance of a dental all-ceramic restoration body is not influenced, and the clinical service life is guaranteed. Therefore, the obtained roughened surface of the dental zirconia ceramic has clinical application value.

Description

technical field [0001] The invention relates to the technical field of surface roughening treatment of dental zirconia-based ceramics, in particular to a new method for surface treatment of dental zirconia-based ceramics and improving its bonding performance. Background technique [0002] At present, there are many kinds of dental ceramics used clinically, mainly including alumina-based ceramics, glass-based ceramics and zirconia-based ceramics. Because the main components of each ceramic are different, their physical and chemical properties are also different. Among them, zirconia stands out among many dental all-ceramic materials due to its excellent mechanical properties, which greatly broadens the indications of all-ceramic restorations. [0003] However, the light transmission of zirconia ceramics is poor. In order to improve its aesthetic performance, it is usually used as a base crown clinically, and then feldspar veneer porcelain is prepared on it to achieve better a...

Claims

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Application Information

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IPC IPC(8): A61C13/01A61C13/00
Inventor 章非敏陈晨谢海峰鲁艺孙为银
Owner SOUTHEAST UNIV
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