	US 7,549,860 B2
	Hand instrument for detaching orthodontic brackets from teeth
Philip P. Soo, Fullerton, Calif. (US); Fay T. Salmon, Eden Prairie, Minn. (US); John A. Verdouw, Ontario, Calif. (US); Ming-Lai Lai, Arcadia, Calif. (US); and James D. Clearly, Glendora, Calif. (US)
Assigned to 3M Innovative Properties Company, St. Paul, Minn. (US)
Filed on Dec. 13, 2004, as Appl. No. 11/10,889.
Prior Publication US 2006/0127835 A1, Jun. 15, 2006
Int. Cl. A61C 7/00 (2006.01)

U.S. Cl. 433—4

5 Claims

1. A method of detaching from a tooth an orthodontic bracket having a lingual surface for bonding to the tooth, an archwire slot extending across a facial surface opposite the lingual surface extending from a mesial side of the bracket to a distal side of the bracket and opposed mesial and distal ceramic sections comprising:

engaging the mesial side of the mesial ceramic section of the bracket with a first contact pad of a hand instrument along a first contact area spaced from a facial edge of the mesial side;

engaging the distal side of the distal ceramic section of the bracket with a second contact pad of the hand instrument along a second contact area spaced from a facial edge of the distal side; and

urging the first contact pad and the second contact pad in directions toward each other in order to pivot at least one of the mesial and distal ceramic sections away from the tooth and toward the opposing ceramic section(s), wherein the act of urging the first contact pad and the second contact pad in directions toward each other is carried out while avoiding contact of the hand instrument with regions of the mesial and distal sides of the bracket located between the first and second contact areas and the respective facial edges,

wherein the act of engaging a mesial side of the mesial ceramic section with a first contact pad is carried out by engaging at least 50% of the area of the first contact pad with the mesial side at a location beneath the archwire slot of the bracket in a lingual direction.