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Resin-permeable ceramic composite and preparation method thereof

A ceramic composite material and resin infiltration technology, applied in dental preparations, pharmaceutical formulations, dental prostheses, etc., can solve the problems of detachment of repair materials, limit the wide application of resin-based composite materials, etc., achieve low hardness and elastic modulus, high Bending strength, effect of avoiding volume change

Active Publication Date: 2016-10-12
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

(Ferracane J.L., et.al, Dent. Mater., 2005, 21, 36-42) However, since the bond length of the covalent bond is much smaller than the intermolecular bond length between monomers, the inorganic particles toughen the resin matrix composite It has significant shrinkage properties after curing, and this unique shrinkage property will introduce residual stress during the composite repair process, which will cause the repair material to detach from the restoration, which severely limits the wide application of resin-based composites (Ferracane J.L., et. al, Dent. Mater., 2011, 27, 29-38)

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  • Resin-permeable ceramic composite and preparation method thereof
  • Resin-permeable ceramic composite and preparation method thereof

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preparation example Construction

[0040] The invention provides a method for preparing a resin-infiltrated ceramic composite material, comprising the following steps:

[0041] (1), mixing the mixture of thermosetting agent and methacrylate compound to obtain mixed resin;

[0042] (2), infiltrating the mixed resin obtained in the step (1) into the ceramic green body to obtain ceramics infiltrated with resin;

[0043] (3) Solidify the resin-infiltrated ceramic obtained in the step (2) to obtain a resin-infiltrated ceramic composite material.

[0044] In the present invention, the mixture of the thermal curing agent and the methacrylate compound is mixed to obtain a mixed resin for use. The present invention has no special requirements on the mixing process, and the mixing method known to those skilled in the art can be adopted; in the embodiments of the present invention, the mixing method of the mixture of the heat curing agent and the methacrylate compound It is specifically the way of ordinary stirring or m...

Embodiment 1

[0067] Weigh 4.5g of 3Y-TZP, use a tablet press to press the powder into a ceramic green body precursor, the pressure is 4MPa, and the holding time is 3min; use cold isostatic pressing to compress the zirconia ceramic green body to obtain a denser ceramic green body Blank, the pressure is 220MPa, the pressure holding time is 1min; the ceramic green body is sintered in the air atmosphere to obtain the ceramic green body for use, wherein the sintering temperature is 1000°C, and the holding time is 2h. Mix bisphenol A glycerol dimethacrylate and tri(ethylene glycol) dimethacrylate with a mass ratio of 1:1, and stir for 2 hours with magnetic stirring; add the curing agent benzoyl peroxide to the above mixed resin Continue to stir for 2 hours to obtain a resin solution. According to the mass fraction of the mixed resin, the amount of curing agent added is 1%; the spare ceramic body is immersed in the resin solution, and placed in a vacuum environment with a vacuum degree of -0.1MPa....

Embodiment 2

[0071] Weigh 4.5g of 3Y-TZP, use a tablet press to press the powder into a ceramic green body precursor, the pressure is 4MPa, and the holding time is 3min; the ceramic green body obtained by pressing the zirconia ceramic green body by cold isostatic pressing, The pressure is 220 MPa, and the holding time is 1 min; the ceramic green body is sintered in an air atmosphere to obtain a ceramic green body, the sintering temperature is 1050° C., and the holding time is 2 h. Mix bisphenol A glycerol dimethacrylate and tri(ethylene glycol) dimethacrylate with a mass ratio of 1:1, and use magnetic stirring for 2 hours to obtain a resin solution; the curing agent benzoyl peroxide Add the above resin solution and continue to stir for 2 hours. According to the mass fraction of the mixed resin, the amount of curing agent added is 1%; immerse the ceramic green body in the mixed resin solution, place it in a vacuum environment, and infiltrate it for 4 hours; The material was cured in a vacuu...

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Abstract

The invention provides a resin-permeable ceramic composite which is formed by curing a ceramic body and mixed resin permeating in the porous network structure of the ceramic body, wherein the ceramic body has a porous network structure and comprises yttria-stabilized tetragonal phase zirconia; and the mixed resin comprises a mixture of methacrylate compounds and a thermal curing agent. The resin-permeable ceramic composite provided by the invention is composed of a porous ceramic network structure and resin permeating in the ceramic network structure; by adopting the ceramic as a matrix, the volume change of the composite in the curing process can be effectively avoided, and the defects that traditional particle reinforcing resin-based composite is easily cured and shrunk and consequently residual stress is introduced are overcome; and through the permeation way, the mixed resin can form a resin network structure penetrating through the ceramic network structure, and a ceramic-based composite with excellent mechanical properties is obtained.

Description

technical field [0001] The invention belongs to the technical field of dental restoration materials, in particular to a resin-infiltrated ceramic composite material and a preparation method thereof. Background technique [0002] Oral health care is closely related to the quality of life of the people. According to the latest statistics from the World Health Organization, oral disease has been listed as the third largest disease after cancer and cerebrovascular disease. Studies have shown that the prevalence of various oral diseases in my country is as high as 97.6%, mainly concentrated in oral diseases such as dental caries and periodontitis. The results of the third national oral health epidemiological survey show that the dental caries rate of the population in my country is 40%, and each patient involves 2-3 teeth on average. With an aging population and improved quality of life, the demand for and research on prosthodontics is rapidly expanding. At present, the researc...

Claims

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Application Information

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IPC IPC(8): C04B41/83A61K6/02A61K6/083
CPCA61K6/818A61K6/887C04B41/009C04B41/483C04B41/83C04B35/48C04B41/46C08L33/10C08L33/12
Inventor 林元华李静南策文沈洋
Owner TSINGHUA UNIV
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