Orthodontic appliance with porous tooth-abutting face
AssigneeOrmco Corporation
InventorsFrank R. Miller, Craig A. Andreiko, Kenneth W. Premo
Life of this patent
Estimating the term…
Abstract
Attachment of an orthodontic appliance by direct bonding to a tooth utilizing a composite base with a porous tooth-abutting face and various methods for making the device, such as casting as a unitary structure, or forming the composite base by rolling a mesh, in strip form, so as to form flats on at least one surface of the mesh where the mesh is to be in contact with a solid base portion, then bonding the mesh to the base. In the latter embodiment, the metal base is a metal foil to which the appliance is attached and the mesh and foil form a composite strip, from which individual composite pads are formed.
Claims16
Apparatus for use in the practice of orthodontics by being fixed to a tooth by means of an adhesive comprising:
- a base having
- a. a first portion which is a mesh with cross-members which are bonded together at each point of intersection therebetween, said first portion having an outer tooth-contour conforming face and an inner face and
- b. a second non-porous portion co-extensive with the said first portion;
- said first portion terminating in said second portion at the inner face of the mesh by a bond therebetween opposite each cross-member bond;
- and
- an orthodontic appliance extending outwardly from the second portion remote from said first portion, whereby said adhesive enters the mesh-like tooth-abutting surface portion but does not pass through the base to reach the orthodontic appliance.
An orthodontic apparatus for direct bonding comprising:
- a first pad which is non-porous and adapted to have the orthodontic appliance fixed thereto;
- a second pad which is of mesh configuration and is co-extensive with and abutting the first pad for receiving an adhesive for attaching the composite pad to a tooth;
- means for bonding the first pad to the second pad at the individual interfaces therebetween so that the mesh forms a series of innerconnected interstitial adhesive receiving passages;
- and
- an orthodontic appliance extending outwardly from the first pad.
An orthodontic apparatus comprising:
- a composite base pad having a first base pad portion of a metal foil and a second base pad portion of a metal mesh, said first and second pad portions being coextensive with and abutting one another and forming the composite pad by being bonded together at the individual interfaces between the mesh and foil;
- an orthodontic appliance;
- and
- means for fixing the orthodontic appliance to the foil surface portion of the composite pad.
Dependencies are inferred from the claim text.