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Composite material for repairing deletion of tooth and human hard tissues and its preparation

A composite material and hard tissue technology, used in dental preparations, dental prostheses, dentistry, etc., can solve the problems of low strength, high difficulty, and the mechanical strength cannot be very high, and achieve low cost, short time, and easy large-scale continuous. The effect of chemical production

Inactive Publication Date: 2006-08-02
李石保
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the ceramic substrate it uses is selected from aluminosilicate, borosilicate, aluminoborosilicate and feldspar. Since it is mainly a glass phase, the ceramic substrate is actually glass, so its own mechanical The strength cannot reach a very high level. It is very difficult for the composite material to be used as a posterior crown or bridge. The highest bending strength of the prepared composite material is 129Mpa, generally between 110-120MPa. It is suitable for posterior crowns or bridges. bridge, weak

Method used

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  • Composite material for repairing deletion of tooth and human hard tissues and its preparation
  • Composite material for repairing deletion of tooth and human hard tissues and its preparation
  • Composite material for repairing deletion of tooth and human hard tissues and its preparation

Examples

Experimental program
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Effect test

Embodiment 1

[0041] (1) Preparation of partially sintered zirconia ceramic body

[0042] About 18g of spray-granulated 5.25wt% yttria-stabilized tetragonal zirconia (3Y-TZP) nano-powder is molded first, and then cold isostatic pressed. The particle size of the zirconia nanopowder used is 32nm, polyvinyl alcohol is used as a binder, the isostatic pressure is 280Mpa, and the pressure is maintained for 1min. The zirconia green body was partially sintered to obtain a partially sintered body with a relative density of 71.44% TD.

[0043] The heating system of the partial sintering is as follows: the heating rate between room temperature and 800°C is 2°C / min, the temperature is kept at 800°C for 1 hour, the heating rate between 800°C and 1150°C is 10°C / min, and the temperature is raised to 1150°C. ℃ heat preservation time is 120 minutes, then naturally cool down.

[0044] (2) Surface coupling treatment of partially sintered zirconia ceramic body

[0045] Dilute the coupling agent KH-570 with ...

Embodiment 2

[0058] The composite material was prepared according to the method described in Example 1, wherein the partial sintering temperature was changed to 1125° C. to obtain a relative density of 63.87% TD of the partially sintered body, and the rest were the same as in Example 1.

Embodiment 3

[0060] The composite material was prepared according to the method described in Example 1, wherein the partial sintering temperature was changed to 1200° C. to obtain a relative density of 77.54% TD of the partially sintered body, and the rest were the same as in Example 1.

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Abstract

A composite material for reparing tooth and human hard tissue is prepared through preparing the partly sintered ceramics, surficial coupling, and vacuum dipping in resin while in-situ polymerizing.

Description

technical field [0001] The invention relates to a composite material for repairing tooth and human hard tissue loss and a preparation method thereof, in particular to an organic-inorganic composite material for tooth and human hard tissue loss repair and a preparation method thereof. Background technique [0002] In 1983, the first prototype of a dental restoration using computer-aided design / computer-aided manufacturing (CAD / CAM) technology was launched in France. The emergence of this technology is considered a revolutionary breakthrough in the field of stomatology, making automatic or semi-automatic production of restorations a reality. This technology provides a brand-new method for the production of dental restorations. Although it cannot completely replace the traditional restoration production process at present, this method may provide a cost-effective new choice for the majority of patients. [0003] After long-term research by dentists an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/083A61L27/16
Inventor 李石保陈朝辉王忠义
Owner 李石保
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