Orthodontic Appliance with Encoded Information Formed in the Base

Abstract

An improved edgewise orthodontic bracket is disclosed. In one embodiment, a bracket comprises a single pair of opposing T-shaped tie wings which define an archwire slot therebetween. Notches are provided on each of the mesial and distal sides of the center leg of each T-shaped tie wing for selectively receiving a ligating device. The notches are defined in the gingival/occlusal edges of the tie wings and comprise sloped portions that extend labially towards the archwire slot. Convex sidewall portions and convex floor portions are provided in the archwire slot adjacent to the notches. The body of the bracket is interconnected to a base that includes a continuous series of characters that serve as texturing to facilitate bonding of the bracket with a tooth. A discontinuous perimeter rail may be used at the edge of the base. A method for forming a bracket is also provided.

What is claimed is: 
     
         1 . An orthodontic bracket comprising: a body having an archwire slot to accommodate an archwire, said archwire slot having at least one of a convex sidewall and a floor portion adapted to reduce archwire bracket frictional engagement, and an auxiliary slot extending in a gingival/occlusal direction under said floor portion, said auxiliary slot configured to receive one of a steel ligature or an auxiliary shaft, said auxiliary slot being open at either end thereof, and having a surface including two or more characters selected from the group consisting of letters and numbers that are spaced apart from each other, said two or more characters being projected from said surface and having spaces between said two or more characters being recessed, wherein the two or more characters have different dimensions, said body comprising a material selected from the group consisting of plastic, metal, and ceramic, wherein said two or more characters convey to a user of said bracket information selected from the group consisting of: a model number, a manufacturer, a trademark, and a logo. 
     
     
         2 . The bracket as claimed in  claim 1 , wherein said auxiliary slot has square corners. 
     
     
         3 . The bracket as claimed in  claim 1 , wherein the two or more characters in the auxiliary slot have a rounded exterior surface. 
     
     
         4 . The bracket as claimed in  claim 1 , wherein said bracket has a flange. 
     
     
         5 . The bracket as claimed in  claim 1 , wherein said archwire slot is positioned under said archwire slot to conserve a height of the bracket and enhance patient comfort. 
     
     
         6 . The bracket as claimed in  claim 1 , wherein said two or more characters have different dimensions. 
     
     
         7 . An orthodontic bracket comprising: a body comprising a material selected from the group consisting of plastic, metal, and ceramic having an archwire slot to accommodate an archwire and an auxiliary slot passing under the archwire slot, said auxiliary slot configured to receive one of a steel ligature or an auxiliary shaft, said auxiliary slot, having a surface including two or more characters selected from the group consisting of numbers that are spaced apart from each other, said two or more characters being recessed from said surface and having spaces between said two or more characters being projected, wherein said two or more characters convey to a user of said bracket information selected from the group consisting of: model number, manufacturer, date of manufacture, lot number, distributor, placement data, part number and bracket data. 
     
     
         8 . The bracket as claimed in  claim 7 , wherein said archwire slot extends gingivally. 
     
     
         9 . The bracket as claimed in  claim 7 , wherein the two or more characters are integrated into the auxiliary slot. 
     
     
         10 . The bracket as claimed in  claim 7 , wherein the two or more characters have a rounded exterior surface. 
     
     
         11 . The bracket as claimed in  claim 7 , wherein the two or more characters have different dimensions. 
     
     
         12 . The bracket as claimed in  claim 7 , wherein said auxiliary slot extends gingivally/occlusually. 
     
     
         13 . The bracket as claimed in  claim 7 , further comprising a second auxiliary slot, wherein each one of the auxiliary slot and the second auxiliary slot is on each side of a gingival-occlusal center plane of the bracket. 
     
     
         14 . The bracket as claimed in  claim 7 , wherein said auxiliary slot has square corners. 
     
     
         15 . The bracket as claimed in  claim 7 , wherein each of said two or more characters have a width of between about 0.034 and 0.038 inches and a line width of from between 0.008 and 0.010 inches. 
     
     
         16 . The bracket as claimed in  claim 7 , wherein said archwire slot is positioned under said archwire slot to conserve a height of the bracket. 
     
     
         17 . The bracket as claimed in  claim 7 , wherein said bracket has a flange that includes characters that convey to a user of said bracket information selected from the group consisting of: a model number, a manufacturer, a trademark and a logo. 
     
     
         18 . An orthodontic bracket comprising: a body comprising a material selected from the group consisting of plastic, metal, and ceramic having an archwire slot to accommodate an archwire and at least one auxiliary slot that passes under a floor portion of the bracket, said auxiliary slot configured to receive one of a steel ligature or an auxiliary shaft, said auxiliary slot being open at either end thereof, and having a surface including two or more characters selected from the group consisting of letters and numbers that are spaced apart from each other, said two or more characters being molded to depict a trademark, name, symbol, logo, or part number, wherein each character has a width of between about 0.034 and 0.038 inches and wherein a line width of each character is from between 0.008 and 0.010 inches. 
     
     
         19 . The bracket as claimed in  claim 18 , wherein the two or more characters form a pattern of a trademark. 
     
     
         20 . The bracket as claimed in  claim 18 , wherein said auxiliary slot extends gingivally/occlusually.