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Method for manufacturing dental resin block

A manufacturing method, technology of resin block, applied in the direction of dentistry, dental prosthesis, application, etc., can solve the problems of a lot of time and cost, stimulation of dental pulp, etc.

Active Publication Date: 2016-01-27
GC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when dental composite resin is used for filling and restoration, the pasty dental composite resin is polymerized and solidified in the cavity of the tooth, so unpolymerized monomers cannot be avoided, and as a result, there is a problem of stimulating the dental pulp.
In addition, in the case of a dental prosthesis that can be produced by sufficiently polymerizing monomers outside the oral cavity, the shape of the oral cavity and the target site for prosthesis production differ from patient to patient, and the dental prosthesis produced requires The extremely high dimensional accuracy in the unit of several μm requires not only the skill of the technician, but also a lot of time and cost

Method used

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  • Method for manufacturing dental resin block
  • Method for manufacturing dental resin block
  • Method for manufacturing dental resin block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] In Example 1, a polypropylene sheet with a thickness of 1 mm was vacuum-formed to obtain a concave mold with a length of 12 mm×14 mm and a depth of 20 mm. Gently inject paste 1 into the concave mold to fill the inside without gaps. The mold filled with the paste 1 was fixed in an autoclave (manufactured by Kyojin Chemical Co., Ltd.), and nitrogen gas with a concentration of 99.9% was replaced at 0.3 MPa three times so that the oxygen concentration was less than 1.0%.

[0060] Then, the pressure was increased to 2.0 MPa with nitrogen, and at the same time as the pressure increase was completed, the furnace was heated to 120° C., and polymerization and curing were performed for 1 hour. After 1 hour, the pressure was reduced to atmospheric pressure, the mold was taken out after cooling to 60°C or lower in the furnace, and the polymerized dental resin block was pulled out of the mold.

Embodiment 2

[0062] In Example 2, the same mold as in Example 1 was used, paste 2 was gently injected into the mold, and the inside was filled without gaps. The mold filled with the paste 2 was fixed in an autoclave (manufactured by Kyojin Chemical Co., Ltd.), and nitrogen gas with a concentration of 99.9% was replaced at 0.3 MPa three times so that the oxygen concentration was less than 1.0%.

[0063] Then, the pressure was increased to 3.0 MPa with nitrogen, and at the same time as the pressure increase was completed, the furnace was heated to 120° C., and polymerization and curing were performed for 1 hour. After 1 hour, the pressure was reduced to atmospheric pressure, the mold was taken out after cooling to 60°C or lower in the furnace, and the polymerized dental resin block was pulled out of the mold.

Embodiment 3

[0065] In Example 3, a simulation block of 12mm×l4mm×18mm in vertical and horizontal height was embedded with a fluorogen II slurry type (ウォッシュタイプ) (GC Co., Ltd.) as a dental silicone impression material. After curing, the simulation was taken out. Block, get a concave mold. The paste 3 is gently injected into the concave mold to fill the inside without gaps. The mold filled with the paste 3 was fixed in an autoclave (manufactured by Kyojin Chemical Co., Ltd.), and nitrogen gas with a concentration of 99.9% was replaced at 0.3 MPa three times so that the oxygen concentration was less than 1.0%.

[0066] Then, the pressure was increased to 3.0 MPa with nitrogen, and at the same time as the pressure increase was completed, the furnace was heated to 120° C., and polymerization and curing were performed for 1 hour. After 1 hour, the pressure was reduced to atmospheric pressure, the mold was taken out after cooling to 60°C or lower in the furnace, and the polymerized dental resin blo...

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Abstract

Provided is a method for manufacturing a dental resin block that has little cracks and bubbles. The method comprises: a step for pouring a material before curing, said material being for manufacturing a dental resin block, into a mold formed of a non-metal material; a step for pressurizing at 1.0 MPa or higher the mold and the material before curing that has been poured thereinto; and a step for heating at 60 DEG C or higher the mold and the material that has been poured thereinto.

Description

Technical field [0001] The present invention relates to a method of manufacturing a dental resin block used when manufacturing dental prostheses such as inlays and crowns by cutting using a CAD / CAM device. Background technique [0002] In dental treatment, when aesthetics is required in cases such as inlays and dental crowns, dental composite resin filling restoration or ceramic inlays, resin veneer casting crowns, and porcelain veneer casting crowns are usually performed. And restoration of dental prostheses such as all-ceramic crowns. [0003] However, when the dental composite resin is used for filling and restoration, the paste-like dental composite resin is polymerized and solidified in the cavity of the tooth, so it is unavoidable that unpolymerized monomer remains, resulting in a problem of irritation of the dental pulp. In addition, in the case of a dental prosthesis produced by fully polymerizing monomers outside the oral cavity, the shape of the oral cavity and the targe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C5/10A61C13/08A61C13/20A61C5/77
CPCA61C13/08A61C13/0022A61C13/087A61C5/77A61C13/206A61C13/081B29C33/40B29C35/0238B29K2901/00B29L2031/7536
Inventor 中山瑞树高木畅人
Owner GC CORP
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