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EP0452492A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Orthodontic bracket, bracket kit and bonding method of the bracket

Assignee: Japan Institute of Advanced Dentistry
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Filing: 1989-10-27
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Granted: —
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Expires: 2009-10-27
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Abstract

Abstract This invention relates to an orthodontic bracket having a bonding layer comprising a photo-polymerization type adhesives (4) formed on the back of a bracket main body (3) made of a light-transmissive material, to a bracket kit which stores the bracket in a shading container (2) and seals the upper surface of the container by a seal (1) consisting of an aluminum laminate and cuts off the rays of light, and to a bonding method comprising applying a liner consisting of a polymerizable monomer mixture solution to the surface of a tooth which has been in advance treated with an acid, then bringing an orthodontic bracket provided thereon with an adhesive layer consisting of a photo-polymerizable adhesive into pressure-contact with the tooth surface, and then subjecting the bracket to irradiation by rays of light.

Inventors

  • 👤 Eiichi Masuhara
  • 👤 Shigeo Komiya

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 00:36
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12; A61C2202/00; A61C2202/01

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 26 words
An orthodontic bracket which comprises a photopolymerization-type adhesive layered and fixed on a back surface portion of a bracket main body made of a light-transmitting material.
Claim 2
Dependent Claim 17 words
An orthodontic bracket according to claim 1, wherein the light-transmitting material is made of a composite resin.
Claim 3
Dependent Claim 17 words
An orthodontic bracket according to claim 1, wherein the light-transmitting material is made of a thermoplastic resin.
Claim 4
Dependent Claim 15 words
An orthodontic bracket according to claim 1, wherein the light-transmitting material is made of ceramic.
Claim 5
Dependent Claim 19 words
An orthodontic bracket kit which comprises an orthodontic bracket according to claim 1 hermetically sealed in a light-shielding container.
Claim 6
Dependent Claim 28 words
An orthodontic bracket kit according to claim 5, wherein a plurality of the brackets are hermetically sealed in the light-shielding container in an independent form with each other.
Claim 7
Dependent Claim 32 words
An orthodontic bracket kit according to claim 5 or 6, wherein the light-shielding container comprises a main body made of a black polyolefin and a sealant made of an aluminum laminate film.
Claim 8
Dependent Claim 32 words
A process for the adhesion of an orthodontic bracket according to claim 1, comprising pressing the orthodontic bracket against a tooth surface pretreated with an acid, and irradiating the bracket with light.
Claim 9
Dependent Claim 68 words
A process according to claim 8, wherein a liner is a liquid mixture of a polymerizable monomer containing as a catalyst one of an organic peroxide, a combination of an organic peroxide with a photochemical sensitizer and a combination of a reducing agent with a photochemical sensitizer is applied to the tooth surface pretreated with an acid, and then the orthodontic bracket is pressed against the tooth surface.

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