EP0099741A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Orthodontic attachments
Assignee: Individual
•
Filing: 1983-07-15
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Granted: —
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Expires: 2003-07-15
Abstract
Abstract Orthodontic brackets or other dental attachments are provided with particulate material on the tooth engaging surface thereof to improve the strength of the bond of bracket to a tooth surface. The particulate material may be in discrete form or in the form of layers of interconnected particles forming a porous structure.
Inventors
- 👤 Dennis Clifford Smith
- 👤 Rolf Maijer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 11:59
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
26 words
A dental attachment having a tooth engaging surface suitable for adhesive bonding of the attachment to teeth, characterized by particulate material on the tooth engaging surface.
Claim 2
Dependent Claim
26 words
A dental attachment having a tooth engaging surface suitable for adhesive bonding of the attachment to teeth, characterized by particulate material on the tooth engaging surface.
Claim 3
Dependent Claim
36 words
The dental attachment claimed in claim 1, characterized in that the particulate material is joined together at its points of contact to define a porous coating on the surface having an interconnected network of pores therein.
Claim 4
Dependent Claim
28 words
The dental attachment claimed in claim 1 or 2, characterized in that the tooth engaging surface is constructed of metal and the particulate material is constructed of metal.
Claim 5
Dependent Claim
29 words
The dental attachment claimed in claim 1 or 2, characterized in that the tooth engaging surface is constructed of metal and the particulate material is constructed of ceramic material.
Claim 6
Dependent Claim
42 words
The dental attachment claimed in any one of claims 1 to 4, characterized in that the coating has a thickness of less than 500 microns, a porosity of 10 to 50% by volume and a failure value of at least 8 MPa.
Claim 7
Dependent Claim
27 words
The dental attachment claimed in any one of claims 1 to 5, characterized in that the particulate material has a diameter of less than about 200 microns.
Claim 8
Dependent Claim
103 words
The dental attachment claimed in any one of claims 1 to 6, in the form of an orthodontic bracket having a metal tooth engaging surface, characterized in that a porous coating on the tooth engaging surface consists of metal spheres having a diameter of less than 200 microns and joined to each other and to the tooth engaging surface at their points of contact therewith, has a thickness of 50 to 300 microns, and a porosity of 10 to 50 volume %, and the interface between the porous coating and the tooth engaging surface has a structural strength of at least 8 MPa.
Claim 9
Dependent Claim
20 words
The dental attachment claimed in claim 7, characterized in that the bracket and the coating are constructed of stainless steel.
References Cited (Backward Citations)
No citation records indexed.
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