An orthodontic self-ligating bracket for orthodontic treatment of maloccluded teeth is provided that includes a bracket body and a bracket door including a coplanar spring. The bracket body has a base that is contoured to attach to a surface of a tooth, a archwire slot on the top side of the bracket body extending in a mesiodistal direction and configured to releasably retain an archwire, and a bracket groove on the top side of the bracket body extending in an occlusogingival direction towards the archwire slot. The coplanar spring includes a spring body and one or more legs that deflect in direction generally coplanar with a plane of motion of the bracket door. The one or more legs interact with one or more depressions in the bracket body to move and retain the bracket door on the bracket body.