Abstract: A cast orthodontic appliance for bonding to a tooth having an appliance portion with an archwire slot and a pad or base portion with a curved tooth-conforming bonding surface. The bonding surface is formed with a plurality of horizontal or vertical grooves or slots opening lingually. The grooves on each side of center diverge.

Abstract: An orthodontic bracket for use with an archwire to orthodontically treat a patient by imparting corrective forces to a tooth. The bracket includes a base portion for attachment to the tooth, mesial and distal tie wings extending from the base portion, each of which includes gingival and occlusal tips defining therebetween a buccolabial opening archwire slot. The archwire slots are in mutual alignment and define a reference line for orienting the bracket in parallel relation to the occlusal plane and the tie wings are oriented such that they are obliquely angled to the reference line. The gingival tips have surfaces that are in parallel alignment with the reference line and substantially equidistant therefrom, and the outer borders of the tie wings form a trapezoidal configuration as the tie wings are of unequal size.

Abstract: An orthodontic appliance to be used in a straight-wire technique setup as an auxiliary for applying closing forces between spaced teeth, wherein the appliance is mounted on a bracket attached to a band or pad. The appliance includes a base attachable to the bracket and an arm extending from the base and terminating in a hook for the attachment thereto of a force transmission member, such as an elastic. The appliance is attached to the bracket so that it is removable from the bracket after the use of the appliance has been completed and while the bracket remains mounted on a tooth.