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Dental prosthesis and component thereof

a technology for dental prosthesis and components, applied in dental prosthesis, dental surgery, impression caps, etc., can solve problems such as infection and inflammation, and achieve the effect of preventing more effectively the invasion of germs

Inactive Publication Date: 2019-05-16
MEDICAL FOUND NATURAL SMILE +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention provides a way to prevent germs from getting into the space between a dental implant and the gums, which can cause infection and inflammation. This is done through an abutment, which helps to seal the gap and prevent germs from entering.

Problems solved by technology

When a long period elapses after the implant was embedded, a gap is formed between the abutment (dental material) and the gingiva, and germs invade through said gap, which may cause infection and inflammation.

Method used

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  • Dental prosthesis and component thereof
  • Dental prosthesis and component thereof
  • Dental prosthesis and component thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0073]

[0074](Primary Particle Generating Step)

[0075]Dodecane [CH3(CH2)10CH3] was used as a continuous oil phase and pentaethylene glycol dodecyl ether [CH3(CH2)10CH2O(CH2CH2O)4CH2CH2OH] having a clouding point of 31° C. was used as a nonionic surfactant. At room temperature, 40 ml of the continuous oil phase containing 0.5 g of the nonionic surfactant was prepared. Next, 10 ml of 2.5 mol / l calcium hydroxide [Ca(OH)2] aqueous dispersion was added to the continuous oil phase prepared as above to prepare a water-in-oil type solution (W / O solution). While the W / O solution was stirred, 10 ml of 1.5 mol / l potassium dihydrogenphosphate [(KH2PO4)] solution was added thereto. Then, the solution was stirred at room temperature over 24 hours to cause a reaction. Next, the resulting reaction product was separated and washed by centrifugation to obtain a group of hydroxyapatite (HAp) primary particles.

[0076](Mixing Step)

[0077]1.0 g of a group of hydroxyapatite (HAp) primary particles was dispers...

preparation example 2

[0099]

[0100](Primary Particle Generating Step)

[0101]Dodecane [CH3(CH2)10CH3] was used as a continuous oil phase and pentaethylene glycol dodecyl ether [CH3(CH2)10CH2O(CH2CH2O)4CH2CH2OH] having a clouding point of 31° C. was used as a nonionic surfactant. At room temperature, 40 ml of the continuous oil phase containing 0.5 g of the nonionic surfactant was prepared. Next, 10 ml of 2.5 mol / l calcium hydroxide [Ca(OH)2] aqueous dispersion was added to the continuous oil phase prepared as above to prepare a water-in-oil type solution (W / O solution). While the W / O solution was stirred, 10 ml of 1.5 mol / l potassium dihydrogenphosphate [(KH2PO4)] solution was added thereto. Then, the solution was stirred at room temperature over 24 hours to cause a reaction. Next, the resulting reaction product was separated and washed by centrifugation to obtain a group of hydroxyapatite (HAp) primary particles.

[0102](Freezing / Thawing Step)

[0103]Thereafter, after a supernatant in a reaction vessel was tra...

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Abstract

This invention provides a measure that makes it possible to prevent more effectively, in comparison with the prior art, the invasion of germs from the gap between a dental prosthesis and the gingiva when the dental prosthesis is used in an oral cavity as well as the infection and inflammation associated therewith.There is a dental prosthesis or a component thereof, characterized in that: the dental prosthesis or the component thereof has hydroxyapatite fine particles on a surface of the dental prosthesis or the component thereof; the hydroxyapatite fine particles are sintered bodies; and the hydroxyapatite fine particles have a mean particle size of 10 to 1,000 nm.

Description

TECHNICAL FIELD[0001]The present invention relates to a dental prosthesis used in an oral cavity and a component thereof.BACKGROUND ART[0002]As shown in FIG. 1, an implant 1 (implant kit) is composed of an upper structure 1-1 (dental crown part: implant denture) and an implant body 1-4 {dental root part: fixture (artificial dental root)}. Here, an abutment 1-3 is a part that connects the upper structure 1-1 and the implant body 1-4 via a screw 1-2.[0003]When a long period elapses after the implant was embedded, a gap is formed between the abutment (dental material) and the gingiva, and germs invade through said gap, which may cause infection and inflammation. Accordingly, various methods have been proposed to solve this problem.[0004]First, Patent Literature 1 proposes a technical solution of imparting antibacterial properties to an artificial dental root by coating a gingival abutting surface of the artificial dental root with a bioinert component {CaMgSi2O6 (diopside) crystal}. In...

Claims

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Application Information

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IPC IPC(8): A61C8/00A61K6/033A61K6/838
CPCA61C8/0013A61K6/033A61C13/09A61C8/005A61C8/00A61L2430/12A61L27/32A61K6/838A61L31/022A61L27/54A61K6/69A61L27/40A61L27/12
Inventor FUJINAMI, JUNFUJINAMI, MIWAOKABE, SHINICHIHIEDA, YOHKIKOGAI, YASUMICHIKAWABE, KARL KAZUSHIGE
Owner MEDICAL FOUND NATURAL SMILE