Elastic orthodontic appliance for an edgewise-type bracket

An elastic orthodontic appliance for retaining an archwire on an edgewise-type bracket and for applying a tipping force between the archwire and bracket to induce movement or control between the archwire and the bracket, wherein said bracket includes at least one tie wing with occlusal and gingival tips and a horizontally opening archwire slot in said tie wing having diagonally disposed tipping surfaces and diagonally disposed uprighting surfaces, said appliance comprising an endless strand for hooking over and behind said tips and having portions extending along the mesial and distal sides of said bracket and over an archwire disposed in said slot, a cross member extending between said strand portions, and enlargements along said cross member at the backside thereof for disposition between the archwire and the bracket, said enlargements being sized relative to the archwire and bracket to be compressed when activated thereby generating a force to induce movement of the bracket relative to the archwire.

In combination with an edgewise-type bracket having at least one tie wing with occlusal and gingival tips and a horizontally opening archwire slot including diagonally disposed tipping surfaces and diagonally disposed uprighting surfaces, an archwire in said slot, an elastic appliance having an endless strand looped over and behind said tips and extending along opposite sides of the bracket and over said archwire in stretched condition, a cross member connected to said strand and disposed over said archwire and in said slot, and force means in alignment with said cross member and/or disposed between said archwire and said bracket tipping surfaces to generate an uprighting force.

In combination with an edgewise-type bracket having at least one tie wing with occlusal and gingival tips and a horizontally opening archwire slot including diagonally disposed uprighting surfaces and diagonally disposed tipping surfaces, an archwire in said slot, an elastic appliance having an endless strand looped over and behind said tips and extending along opposite sides of the bracket over said archwire in stretched condition to connect the archwire and bracket, a cross member disposed over said archwire and extending between the portions of said endless strand at opposite sides of said bracket, and wedge means extending from said strand and cross member and in alignment with said cross member and disposable between said archwire and the side of the bracket wing tip contiguous to said uprighting surfaces or said archwire and the side of the bracket wing tip contiguous to said tipping surfaces to apply a force therebetween, whereby said cross member urges said wedge means toward and between said archwire and uprighting or tipping surfaces.

An elastic appliance for and edgewise-type bracket to retain an archwire in the archwire slot of said bracket and to transmit a force between the archwire and bracket to cause said bracket and a tooth on which it is mounted to move and/or stabilize relative to said archwire, said appliance in unstretched condition comprising a ring portion, a cross member portion diametrical to said ring portion, said cross member having a portion projecting from the backside with a cross-sectional wedge shape that seeks to move between the archwire and the bracket, whereby said appliance functions to retain an archwire on a bracket and exert a force between the archwire and the bracket.

In combination with an edgewise-type bracket having at least one tie wing with occlusal and gingival tips and a horizontally opening archwire slot including at least one uprighting surface and at least one tipping surface, an archwire in said slot, an elastic appliance having an endless strand looped behind said tips and extending along opposite sides of the bracket over said archwire in stretched condition to connect the archwire and bracket, a cross member disposed across said archwire and extending between the portions of said endless strand at opposite sides of said bracket, and said cross member having a wedge shape in cross section portion projecting from the side of the cross member facing the bracket and seeking to move between the archwire and the uprighting or tipping surfaces.

In combination with an edgewise-type bracket having at least one tie wing with occlusal and gingival tips and a horizontally opening archwire slot including diagonally disposed uprighting surfaces and diagonally disposed tipping surfaces, an archwire in said slot, an elastic appliance having an endless strand looped behind said tips and extending along opposite sides of the bracket over said archwire in stretched condition to connect the archwire and bracket, a cross member disposed across said archwire and extending between the portions of said endless strand at opposite sides of said bracket, and said cross member having a wedge shape in cross section portion projecting from the side of the cross member facing the bracket and seeking to move between the archwire and the uprighting or tipping surfaces.

An elastic appliance for an edgewise-type bracket retaining an archwire in the archwire slot of an edgewise-type bracket in overlying relation to said archwire to transmit a force between the archwire and bracket to cause said bracket and a tooth on which it is mounted to move and/or stabilize relative to said archwire, said appliance in unstretched condition comprising an endless strand portion, and a cross member portion integral with and extending across the strand portion, whereby said appliance functions to retain an archwire on a bracket and exert a force between the archwire and the bracket.

In combination with an edgewise-type bracket having at least one tie wing with occlusal and gingival tips and a horizontally opening archwire slot including at least one uprighting surface and at least one tipping surface, an archwire in said slot, an elastic appliance having an endless strand looped behind said tips and extending along opposite sides of the bracket over said archwire in stretched condition to connect the archwire and bracket, and a cross member disposed across said archwire and extending between the portions of said endless strand at opposite sides of said bracket, whereby said cross member at said portions seeks to move between the archwire and the uprighting or tipping surfaces to apply a separating force.

In combination with an edgewise-type bracket having at least one tie wing with occlusal and gingival tips and a horizontally opening archwire slot including diagonally disposed uprighting surfaces and diagonally disposed tipping surfaces, an archwire in said slot, an elastic appliance having an endless strand looped behind said tips and extending along opposite sides of the bracket over said archwire in stretched condition to connect the archwire and bracket, and a cross member disposed across said archwire and extending between the portions of said endless strand at opposite sides of said bracket, whereby said cross member at said portions seeks to move between the archwire and the uprighting or tipping surface to apply a separating force.

An elastic orthodontic appliance in an overlying relation with and retaining an archwire on an edge-wise bracket and applying a tipping force between the archwire and bracket to induce movement or control between the archwire and the bracket, wherein said bracket includes at least one tie wing with occlusal and gingival tips and a horizontally opening archwire slot in said tie wing having diagonally disposed tipping surfaces and diagonally disposed uprighting surfaces, said appliance comprising an endless strand for hooking over and behind said tips and having portions extending along the mesial and distal sides of said bracket and over an archwire disposed in said slot, and a cross member extending between said strand portions.