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Composite material, curable composition, and method for producing curable composition

A technology of curable composition and composite material, which is used in the manufacture of curable composition and the field of composite materials for repairing dental filling and restorative materials, and can solve the problems of difficult dentin surface color tone, difficult to cause structural color and the like

Active Publication Date: 2021-04-09
TOKUYAMA DENTAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It should be noted that Patent Document 2 also records that: when the average particle diameter of the spherical filler used is less than 100 nm, it is difficult to cause the appearance of structural color; The structural color of the system is difficult to harmonize with the tone of the dentin surface in the deep part of the repaired cavity

Method used

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  • Composite material, curable composition, and method for producing curable composition
  • Composite material, curable composition, and method for producing curable composition
  • Composite material, curable composition, and method for producing curable composition

Examples

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Embodiment

[0194] Hereinafter, the present invention will be further specifically described by way of examples, but the present invention is not limited by these examples.

[0195] The composite materials of Examples and Comparative Examples were all obtained by curing a curable composition containing a polymerizable monomer, inorganic particles, and a polymerization initiator. First, each component used for the curable composition of an Example and a comparative example is demonstrated.

[0196] 1. Polymerizable monomer

[0197] As polymerizable monomers, polymerizable monomer mixtures having the compositions shown in Table 1, that is, M1 and M2 were used. In addition, the abbreviations in the polymerizable monomer column in a table|surface represent the following compounds, respectively, and the number in parentheses represents the mass part used.

[0198] UDMA: 1,6-bis(methacryloylethyloxycarbonylamino)trimethylhexane

[0199] 3G: Triethylene glycol dimethacrylate

[0200] bis-GMA...

reference example 1

[0239] according to figure 1 The flow chart of the following method was used to manufacture the curable composition of Reference Example 1. Specifically, CQ: 4.8 g, DMBE: 16.0 g, and HQME: 2.4 g were added and mixed with respect to the polymerizable monomer mixture M1: 1600 g, and a uniform polymerizable monomer composition was prepared. Next, G-PID4: 6400g was weighed, and the above-mentioned polymerizable monomer composition was gradually added under red light, and the capacity of the stirring container was 15 L. ), kneading for 2 hours under the condition that the rotating speed of the stirring paddle was 7rpm~10rpm. The kneading was temporarily stopped, and 5.0 g of the mixture was sampled. This sample was degassed under reduced pressure at a pressure of 1000 Pa for 5 minutes, and irradiated with light for 30 seconds by a visible light irradiator (manufactured by Tokuyama Corporation, POWER LIGHT) to be cured. Regarding the obtained cured body, the radial distribution f...

Embodiment 1

[0241] CQ: 0.3 mass parts, DMBE: 1.0 mass parts, and HQME: 0.15 mass parts were added and mixed with respect to polymerizable monomer mixture M1: 100 mass parts, and the uniform polymerizable monomer composition was prepared. Next, weigh G-PID4: 400 parts by mass and superfine particle group (G-SFP): 0.5 parts by mass, slowly add the above polymerizable monomer composition under red light, and use a mixer planetary mixer (manufactured by Inoue Seisakusho Co., Ltd.) was sufficiently kneaded to obtain a uniform curable paste. Furthermore, this paste was defoamed under reduced pressure to remove air bubbles, and a curable composition was produced. For the cured body (composite material) of the curable composition obtained, (1) evaluation of colored light by visual observation, (2) wavelength measurement of colored light, and (3) evaluation of color tone compatibility by colorimeter were performed , (4) Evaluation of color matching property by visual inspection, and (5) Evaluatio...

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Abstract

Provided is a composite material in which inorganic particles are dispersed in a resin matrix. The inorganic particles include spherical particle groups having the same particle diameter (GPI) formed from an aggregate of inorganic spherical particles having a specific average primary particle diameter and having a narrow particle size distribution range, and ultrafine particle groups (GSFP) having a specific average primary particle diameter. The ultrafine particle groups (GSFP) have a specific average secondary particle diameter. The refractive index of the inorganic spherical particles is smaller than that of the resin matrix, the number of the spherical particle groups (GPID) with the same particle size is one or more, and the arrangement structure of the inorganic spherical particles constituting all the spherical particle groups with the same particle size in the resin matrix has a short-range ordered structure satisfying a specific condition. In addition, the present invention provides a curable composition for the composite material; and a method for producing the curable composition.

Description

technical field [0001] The present invention relates to a composite material in which inorganic particles are dispersed in a resin matrix, a curable composition providing the composite material, and a method for producing the curable composition. Specifically, it relates to a composite material suitable for use as a restorable dental filling and restoration material that can control the color tone of the appearance without using dyes, pigments, etc., has little fading and discoloration, and is excellent in simplicity and aesthetics; the composite material is provided A curable composition; and a method for producing the curable composition. Background technique [0002] Dental composite resin (hereinafter also referred to as "CR") is a material used to restore teeth damaged by caries, fracture, etc., and is formed of a curable composition containing a polymerizable monomer and an inorganic filler. Restoration using dental composite resin (CR) (CR restoration) is rapidly gai...

Claims

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Application Information

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IPC IPC(8): C08L33/14C08K9/06C08K3/22C08K3/36A61K6/831A61K6/887
CPCC08K7/16C08K2201/016A61K6/17A61K6/16A61K6/887A61K6/71A61K6/76C08L33/10C08K7/18C08F2/44C08K3/013C08F220/18C08K2201/005A61K6/831C08F222/102C08F2/50C08K3/36C08K2201/003C08K2201/011
Inventor 松尾拓马森崎宏秋积宏伸
Owner TOKUYAMA DENTAL CORP
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