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Dental restorative material and resin material for dentistry cutting formed of same

A restorative material and dental technology, applied in dentistry, dental preparations, dental prosthesis, etc., can solve the problems of poor machinability and insufficient aesthetics, and achieve high bending strength and surface hardness, transparency and excellent machinability Effect

Inactive Publication Date: 2020-08-04
TOKUYAMA DENTAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyamides are opaque and therefore aesthetically insufficient for dental treatment
In addition, there is also the problem of poor machinability

Method used

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  • Dental restorative material and resin material for dentistry cutting formed of same
  • Dental restorative material and resin material for dentistry cutting formed of same
  • Dental restorative material and resin material for dentistry cutting formed of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0200] 240 g of TDI and 160 g of F1 were put into a planetary mixer (manufactured by Inoue Seisakusho) and kneaded to obtain a composition (a). Similarly, 240 g of GTP and 160 g of F1 were put into a planetary mixer (manufactured by Inoue Seisakusho) and kneaded to obtain a composition (b). Each obtained composition was placed in a desiccator, and the pressure was reduced for 60 minutes to remove air bubbles in the composition. Then, it filled into the mixing tube (CDA, the MIXPAC company make) for mixing. Install the mixer syringe (MA4.0-17S, manufactured by MIXPAC Co., Ltd.), and fill the dental polymer composition obtained by mixing the above-mentioned compositions (a) and (b) to a length of 12×width 18×thickness 14 while extruding. (mm) of the mold, and then left to stand at 23° C. under nitrogen pressure (0.3 MPa) for 1 hour. Then, the temperature was raised to 150° C. under pressure over 20 hours, and maintained for 6 hours. It is then removed from the mold to obtain ...

Embodiment 2

[0202] In Example 1, except that 320 g of TDI and 80 g of F1 were used as composition (a), and 320 g of GTP and 80 g of F1 were used as composition (b), a dental restorative material was obtained in the same manner as in Example 1. Each evaluation result is shown in Table 1.

Embodiment 3

[0204] In Example 1, except that 240 g of XDI and 160 g of F1 were used as composition (a), and 200 g of PETP and 200 g of F1 were used as composition (b), a dental restorative material was obtained in the same manner as in Example 1. Each evaluation result is shown in Table 1.

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Abstract

This dental restorative material contains a resin matrix and 25-1,000 parts by mass of an inorganic filler per 100 parts by mass of the resin matrix; and this dental restorative material is characterized in that the resin matrix contains a polyurethane resin and the inorganic filler has an average particle diameter of 0.001-100 um. The present invention is able to provide: a dental restorative material which has high bending strength and high surface hardness, while exhibiting excellent transparency and cutting workability; and a resin material for dentistry cutting, which uses this dental restorative material.

Description

technical field [0001] The present invention relates to a dental restorative material that can be suitably used as a dental machining resin material for producing a dental prosthesis by machining, and a dental machining resin material composed of the same. Background technique [0002] In dental treatment, as a method of manufacturing dental prostheses such as inlays, onlays, crowns, bridges, and implant superstructures, there is a method of cutting using a dental CAD / CAM system. The dental CAD / CAM system is a system that uses a computer to design a dental prosthesis based on three-dimensional coordinate data, and uses a cutting machine to create a crown restoration. Various materials such as glass ceramics, zirconia, titanium, and resins are used as materials for cutting. As a resin-based material for dental machining, we provide blocks, disks, etc. obtained by curing a curable composition containing inorganic fillers such as silica, polymerizable monomers such as methacry...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/893A61K6/76A61K6/71A61C13/087C08K9/06C08K7/18C08L75/04
CPCA61K6/17A61K6/64A61K6/71A61K6/76C08G18/3876C08G18/7621C08G18/3206C08K9/06C08G18/7642C08G18/675C08G18/765A61C13/0022C08F299/065C08K2201/003C08K3/36C08K3/22C08K2003/2241C08K2003/2244C08K2003/2227A61C13/087A61K6/893C08L75/04C08L75/16A61K6/887C08L33/10A61K6/62B29C39/003B29C39/02B29C39/38B29K2275/00B29K2509/02C08G18/341C08G18/348
Inventor 铃木拓也风间秀树
Owner TOKUYAMA DENTAL CORP