An orthodontic self-ligating bracket for orthodontic treatment of maloccluded teeth, the bracket comprising: a bracket body having a lingual side, a labial side, a mesial side, and a distal side, the bracket body including a base on the lingual side of the bracket body that is contoured to attach to a surface of a tooth; an archwire slot on the labial side of the bracket body, the archwire slot extending in a mesiodistal direction and configured to releasably retain an archwire; and a bracket groove on the labial side of the bracket body, the bracket groove extending in an occlusogingival direction towards the archwire slot; a bracket door that slidably engages the bracket groove along a plane of motion between an open position and a closed position, wherein the archwire slot is exposed when the bracket door is in the open position to allow for placement and removal of the archwire, and wherein the archwire slot is enclosed to securely retain the archwire when the bracket door is in the closed position; wherein the bracket door includes a coplanar spring, the coplanar spring including a spring body and one or more legs (36, 38) connected to the spring body, wherein the one or more legs (36, 38) deflect in a direction generally coplanar with the plane of motion of the bracket door and interact with the bracket body; and wherein the bracket body includes one or more occlusal depressions (48, 50) that interact with the coplanar spring and provide retaining forces on the bracket door, thereby preventing disassembly of the bracket door from the bracket body, and characterized in that the bracket body includes tapered angles adjacent to the occlusal mesial depression and the occlusal distal depression, the tapered angles tapering inwardly toward each other so that as the bracket door is moved toward the closed position, the legs (36, 38) deflect toward each other in order to slide out of the occlusal depression (48, 50) and over the tapered angles. a bracket body having a lingual side, a labial side, a mesial side, and a distal side, the bracket body including a base on the lingual side of the bracket body that is contoured to attach to a surface of a tooth; an archwire slot on the labial side of the bracket body, the archwire slot extending in a mesiodistal direction and configured to releasably retain an archwire; and a bracket groove on the labial side of the bracket body, the bracket groove extending in an occlusogingival direction towards the archwire slot; a base on the lingual side of the bracket body that is contoured to attach to a surface of a tooth; an archwire slot on the labial side of the bracket body, the archwire slot extending in a mesiodistal direction and configured to releasably retain an archwire; and a bracket groove on the labial side of the bracket body, the bracket groove extending in an occlusogingival direction towards the archwire slot; a bracket door that slidably engages the bracket groove along a plane of motion between an open position and a closed position, wherein the archwire slot is exposed when the bracket door is in the open position to allow for placement and removal of the archwire, and wherein the archwire slot is enclosed to securely retain the archwire when the bracket door is in the closed position; wherein the bracket door includes a coplanar spring, the coplanar spring including a spring body and one or more legs (36, 38) connected to the spring body, wherein the one or more legs (36, 38) deflect in a direction generally coplanar with the plane of motion of the bracket door and interact with the bracket body; and wherein the bracket body includes one or more occlusal depressions (48, 50) that interact with the coplanar spring and provide retaining forces on the bracket door, thereby preventing disassembly of the bracket door from the bracket body, and characterized in that the bracket body includes tapered angles adjacent to the occlusal mesial depression and the occlusal distal depression, the tapered angles tapering inwardly toward each other so that as the bracket door is moved toward the closed position, the legs (36, 38) deflect toward each other in order to slide out of the occlusal depression (48, 50) and over the tapered angles.