Cover for bracket of orthodontic appliance
View Patent ↗A cover device formed of a plastic or similar composition is structured for removable attachment over a bracket of an orthodontic appliance to conceal the bracket from view. The cover device includes a main plate with an outer front face, and top and bottom claws integrally formed with the main plate, curling behind the main plate, and each terminating at distal ends in spaced, opposing relation to each other behind the main plate. The front face includes an ornamental design or other indicia that is applied by polymer fusion technology to significantly reduce the risk of exposing the user to inks and pigment compositions, particularly if the cover device is accidentally swallowed. The application of the indicia by polymer fusion technology also increases the structural integrity of the cover device; mechanically strengthening the cover device at its point of greatest flexure.
1. A cover device for attachment to a bracket that is fixed to a patient's tooth in an orthodontic appliance that has an arch wire extending through the bracket, said cover device comprising:
a main plate having an outer front face, a top end, a bottom end, opposite side edges and a rear side;
a top claw integrally formed with the main plate and extending from the top end of the main plate and curling behind the main plate, and a bottom claw integrally formed with the main plate and extending from the bottom end of the main plate and curling behind the main plate, and the top and bottom claws both terminating at distal ends that are positioned in spaced, opposing relation to one another and spaced from the rear side of the main plate;
the main plate being bowed outwardly from the top end to the bottom end when in a relaxed state, and the main plate being adapted to deform inwardly upon application of an external inward force to the front face with the top and bottom claws engaged against a front side of the bracket to cause the top and bottom claws to flex away from one another and snap over the bracket and into frictional engagement with the bracket, to thereby attach the cover device to the bracket and the cover being structured and configured to avoid contact with the arch wire of the orthodontic appliance when the cover device is attached to the bracket and the main plate is in the relaxed state; and
an indicia pattern applied to the outer front face by polyfusion wherein the indicia pattern comprises a pigmented material including a finely divided pigment and polyolefin is permanently fused into the outer front face, and the indicia pattern providing an added layer of material thickness to the outer front face of the main plate to increase the structural integrity of the main plate and provide reinforcement that allows the cover device to resist forces of permanent mechanical deformation when the top and bottom claws flex away from one another and snap over the bracket, thereby providing a tighter fit of the cover device on the bracket.
2. The cover device as recited in claim 1 wherein the cover device is open at opposite sides between the opposite side edges and the top and bottom claws.
3. The cover device as recited in claim 2 wherein the open opposite sides of the cover device are sized and configured to allow passage of the bracket outwardly therethrough upon application of an external lateral force to the cover device that is sufficient to overcome a force of frictional engagement of the top and bottom claws with the bracket, to thereby slide the cover device sideways and off of the bracket.
4. A cover device for attachment to a bracket that is fixed to a patient's tooth in an orthodontic appliance, said cover device comprising:
a main plate having an outer front face, a top end, a bottom end, opposite side edges and a rear side;
a top claw integrally formed with the main plate and extending from the top end of the main plate and curling behind the main plate, and a bottom claw integrally formed with the main plate and extending from the bottom end of the main plate and curling behind the main plate, and the top and bottom claws both terminating at distal ends that are positioned in spaced, opposing relation to one another and spaced from the rear side of the main plate;
the top and bottom claws being structured and disposed for snap-fit attachment over the bracket and into frictional engagement with the bracket to thereby attach the cover device to the bracket; and
an indicia pattern applied to the outer front face by polyfusion wherein the indicia pattern comprises a pigmented material including a finely divided pigment and polyolefin is permanently fused into the outer front face.
5. The cover device as recited in claim 4 wherein the cover device is open at opposite sides between the opposite side edges and the top and bottom claws.
6. The cover device as recited in claim 5 wherein the open opposite sides of the cover device are sized and configured to allow passage of the bracket outwardly therethrough upon application of an external lateral force to the cover device that is sufficient to overcome a force of frictional engagement of the top and bottom claws with the bracket, to thereby slide the cover device sideways and off of the bracket.
7. The cover device as recited in claim 4 further comprising:
a reinforcement layer on the outer front face of the main plate for providing increased structural integrity that allows the cover device to resist forces of permanent mechanical deformation when the top and bottom claws flex away from one another and snap over the bracket, thereby providing a tighter fit of the cover device on the bracket.
8. The cover device as recited in claim 7 wherein the reinforcement layer is provided by the indicia pattern applied to the outer front face.