Rotary tool for shaping replacement teeth

The rotary member for shaping replacement teeth comprising

• a metal support having a generally circular outer shape with a radius less than 20 mm,
• said metal support having a generally flat inner portion extending at least 30% of said radius, said metal support also having contoured contact surfaces located radially outward of said flat inner portion, and
• abrasive particles bonded to said contoured contact surfaces,
• wherein said metal support is made from stamped stainless steel between 0.8 mm and 0.15 mm in thickness, wherein said metal support is sufficiently flexible to bend such that a line through the circumference and the center of the rotary member makes an angle of 45.degree. with the unflexed position under the application of hand applied force when mounted on a rotary shaft extending from a hand-held handle.

The rotary member for shaping replacement teeth comprising

• a metal support having a generally circular outer shape with a radius less than 20 mm,
• said metal support having a generally flat inner portion extending at least 30% of said radius, said metal support also having contoured contact surfaces located radially outward of said flat inner portion, and
• abrasive particles bonded to said contoured contact surfaces,
• wherein said contoured contact surfaces are arcuate,
• wherein said contoured contact surfaces are semicircular in shape in cross-section and extend away from and back to a plane passing through said generally flat inner portion,
• wherein said flat inner portion has a radius between 4 mm and 6 mm, said semiconductor contoured contact surfaces are on a semiconductor portion of said metal support having a depth between 0.7 mm and 2.3 mm and a width between 1.4 mm and 4.6 mm,
• wherein said metal support has a lip outside of said contoured contact surfaces, and said lip is between 0.2 mm and 1.8 mm wide wherein there are abrasive particles carried on both sides of said lip.