Abstract: The orthodontic bracket system includes a bracket having a base for attachment to a tooth surface, a stem above the base, tie wings extending from the stem for securing ligatures, and an archwire slot for receiving an archwire defined by the stem and tie wings. Distal and mesial side surfaces of the bracket base are perpendicular to the archwire slot to allow a rotational device to apply rotational force to a tooth perpendicular to the archwire with direct vector-line guidance. Occlusal and gingival edges of the bracket base between the tie wings are scooped-out or recessed to provide more space to receive a tool under an elastic ligature, and select corners of the tie wings are beveled enlarging space to facilitate entry of instruments for removing wire ligatures, to facilitate instrument access for removal and replacement of ligatures, while streamlining tooth rotation to make arch correction more efficient.

Abstract: The orthodontic bracket system includes a bracket having a base for attachment to a tooth surface, a stem above the base, tie wings extending from the stem for securing ligatures, and an archwire slot for receiving an archwire defined by the stem and tie wings. Distal and mesial side surfaces of the bracket base are perpendicular to the archwire slot to allow a rotational device to apply rotational force to a tooth perpendicular to the archwire with direct vector-line guidance. Occlusal and gingival edges of the bracket base between the tie wings are scooped-out or recessed to provide more space to receive a tool under an elastic ligature, and select corners of the tie wings are beveled enlarging space to facilitate entry of instruments for removing wire ligatures, to facilitate instrument access for removal and replacement of ligatures, while streamlining tooth rotation to make arch correction more efficient.

Abstract: Improved portable easel (10) comprising two functional sections, base (12) and arm holder (16) fastened together with locking hinge mechanism (14) formed by adjustable clutches (14A,14B). The arm holder comprises a plurality of members with an elbow-shaped bend (52A, 52B), containing a plurality of openings in the distal end attached to the hinge mechanism (14) and a plurality of openings in the proximal end, such that proximal openings are at right angles. This hinge mechanism permits the curved holder to fold down over the base and the legs for compact storage and up for a range of angles. Adjustable length arms (22) are attached to arm holder with adjustable clutches (18), allowing arms to freely pivot in a plane until locked in position. Adjustable support legs (20) are pivotally fastened within angled cutouts (42) in the base. Sliding, adjustable, artwork holders (24) are attached to the arms with adjustable clamps.