Dentistry – Orthodontics – Tool
Patent
1996-09-23
1999-01-26
O'Connor, Cary E.
Dentistry
Orthodontics
Tool
A61C 700
Patent
active
058631984
ABSTRACT:
A positioning fixture, or jig, adapted for use with conventional, off-the-shelf orthodontic appliance brackets and arch wires is shaped for optimum placement of the bracket on its associated tooth. Computer modeling of each tooth using digital scanning techniques allows each jig to be custom sized and shaped by CAD/CAM. The jig may be translucent for use with a light sensitive adhesive applied to the bracket to permit light curing of the adhesive. The jig may further be provided with one or more color-coded indicia such as for designating the arch and the particular tooth with which the jig is to be used. The jig may be further provided with elasticity to allow for deformation or failure of the jig to facilitate its removal and may also include an integral occlusal standoff extension to ensure proper in/out, or prominence, registration from the tooth's enamel surface as well as an alignment tab to ensure proper positioning of the jig on its associated tooth. The width of the jig may vary from the width of the appliance to the full width of the tooth itself, where the tooth lacks distinguishing anatomy. A set of jigs for a full set of teeth is packaged in a blister pack arrangement, with each jig attached to an associated removable brace for secure, fixed positioning within an individual upraised compartment of the blister pack. The jig may also span a gap between adjacent teeth for attaching an orthodontic bracket to one of the teeth where sufficient stabilization of the jig cannot be achieved by engaging the target tooth alone.
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