An orthodontic appliance for use in orthodontic treatment. The orthodontic appliance is selected from the group consisting of an orthodontic bracket (110, 200, 300), an orthodontic archwire (10), an orthodontic tool (20), and a discrete component (22, 24, 36, 112, 114, 116, 302, 306, 308) thereof. The orthodontic appliance is made of a metallic glass. The orthodontic appliance may be an orthodontic bracket (110, 200, 300) for coupling an archwire (10) with a tooth. The orthodontic bracket (110, 200, 300) comprises a bracket body (112, 202, 302) including an archwire slot (118, 204, 304), the bracket body (112, 202, 302) being made of a metallic glass. The orthodontic bracket (110, 300) further comprises a movable member (114, 306) made of a metallic glass and operatively coupled to the bracket body (112, 302) and movable between an opened position in which the archwire (10) is insertable into the archwire slot (118, 304) and a closed position in which the movable member (114, 306) retains the archwire (10) in the archwire slot (118, 304). The orthodontic bracket (110, 300) further comprises a pin (116, 308) coupling the movable member (114, 306) to the bracket body (112, 302).
