Multilayer-color composite material for dental department and preparation method of composite material

A composite material and dental technology, applied in the field of dental multi-layer color composite materials and its preparation, can solve the problem of low color similarity, achieve the effect of improving biological safety and strength, high similarity, and improving aesthetic effects

Active Publication Date: 2016-03-02
SHENZHEN UPCERA DENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the dental prosthesis made of a single-color composite material has low color similarity compared with natural teeth, the embodiment of the present invention discloses a dental multi-color composite material and its preparation method

Method used

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  • Multilayer-color composite material for dental department and preparation method of composite material
  • Multilayer-color composite material for dental department and preparation method of composite material

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preparation example Construction

[0023] The present invention provides a kind of preparation method of dental multilayer color composite material, may comprise the following steps:

[0024] a) Preparing N types of monochrome composite precursor powders of different colors, N≥3; wherein, the preparation process of each monochrome composite precursor powder includes:

[0025] Mix the polymer monomer matrix, inorganic fillers, initiators and colorants with grinding aids, grind for 0.5-2 hours, and dry to obtain a monochrome composite material precursor powder; wherein, the weight of the polymer monomer matrix and the inorganic filler The ratio is 10:90-90:10, preferably 15:85-30:70, the weight of the initiator is 0.1%-1%, preferably 0.2%-0.5%, of the total weight of the polymer monomer matrix and the inorganic filler, and the coloring The weight of the agent is 0.01%-0.2%, preferably 0.03%-0.1%, of the total weight of the polymer monomer matrix and the inorganic filler.

[0026] In the present invention, the po...

Embodiment 1

[0045] According to the formulations of powders 1-3 in Table 1 and related process parameters, after the materials are mixed and ball-milled evenly, three kinds of monochromatic composite material precursor powders (ie powders 1-3) with different colors can be prepared; then Add powder 1 to the dry pressing mold first, then add powder 2 after flattening, and then add powder 3 after flattening, wherein, the thickness of powder 1 is 4mm, the thickness of powder 2 is 6mm, and the thickness of powder 2 is 6mm. 3 with a thickness of 4 mm, and then use a dry press to perform dry press preforming under a pressure of 5 MPa to obtain a preformed body of multi-layer color composite material; then pressurize and heat the preform body of multi-layer color composite material , the treatment temperature is 140°C, the pressure is 15 MPa, and the holding time is 1.5 hours, a multi-layer color composite material with three-layer color gradient can be obtained.

Embodiment 2

[0047] According to the formulation of powder 1-3 in Table 1 and related process parameters, three kinds of monochrome composite material precursor powders (i.e. powder 1-3) with different colors were prepared; then using powder 1-3 as raw material, the Powder 1 is added to a dry pressing mold with a thickness of 3mm, and is preformed by dry pressing under a pressure of 7MPa; the same method is used to preform powder 2 with a thickness of 7mm and dry powder 3 with a thickness of 4mm. Press preform. Then put the obtained three single-color preformed bodies into the mold successively and carry out dry pressing preforming under a pressure of 10MPa to obtain a multi-layer color composite material preformed body;

[0048] Then pressurize and heat the preformed body of the multi-layer color composite material. The treatment temperature is 130° C., the pressure is 17 MPa, and the holding time is 2 hours. A multi-layer color composite material with three-layer color gradient can be ob...

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Abstract

The embodiment of the invention discloses a preparation method of a multilayer-color composite material for dental department. The preparation method comprises the following steps: preparing N types of monochromatic composite material precursor powder differing in color, and dry-pressing and pre-forming the prepared precursor powder, so that a preformed green body is obtained; and then warming up and heating the preformed green body, so that the multilayer-color composite material is obtained. The multilayer-color composite material for dental department prepared by the method disclosed by the invention has a gradient multilayer color system, so that the aesthetic effect of a dental repair prepared from the composite material is effectively improved; and the composite material can simulate the characteristic of natural tooth that color gradually varies from tooth neck to biting end, so that a higher similarity to the natural tooth is achieved.

Description

technical field [0001] The invention relates to the field of dental restorations, in particular to a dental multilayer color composite material and a preparation method thereof. Background technique [0002] Computer-aided design and computer-aided manufacture (Computer Aided Design / Computer Aided Manufacture, CAD / CAM) technology was first introduced into the design and manufacture of fixed oral restorations by French professor Francois Duret in the early 1970s, which triggered a great deal of interest in the field of oral restoration. A major technological revolution; among them, CAD refers to the use of computers as the main technical means to generate and use various digital information and graphic information for product design; CAM refers to CNC processing equipment controlled by computers, such as CNC milling machines And other production technology for automatic processing and molding of products. At present, the CAD / CAM system has been able to successfully manufactu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/04A61K6/027A61K6/083A61K6/891
CPCA61K6/842A61K6/831A61K6/84A61K6/887C08F222/1065C08L35/02A61K6/829C08L33/10C08F220/325C08F222/102C08K3/36C08K3/40A61K6/77A61K6/76A61K6/16A61K6/17A61C13/0022
Inventor 王鸿娟盛连军石凤
Owner SHENZHEN UPCERA DENTAL TECH
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