#$%^&*AU2020200762A120200220.pdf#####SELF-LIGATING ORTHODONTIC BRACKET ABSTRACT 5 Disclosed is an orthodontic appliance comprising: a base having a bonding surface, a body extending outwardly from the base, the body including a mesial-distally extending arch wire slot having a bottom wall, a door slidably coupled to the body, the door moveable between an open 10 state in which an archwire can be ligated in the archwire slot and a closed state in which an archwire can be retained in the archwire slot, wherein the door has a lingual surface including coplanar mesial and distal surfaces, and wherein the bottom wall forms an acute angle with the mesial and distal surfaces, and wherein the lingual surface includes a leading edge region that includes planar contacting surfaces that are substantially parallel to the bottom wall.
