Methods for forming ornamental indicia for dental appliances

A method of fabricating a dental appliance, the method comprising:

• forming a polymeric shell having a plurality of tooth-receiving cavities shaped to receive and resiliently reposition a subject's teeth from a first arrangement toward a second arrangement;
• forming a sticker comprising:
• a first adhesive layer configured to be adhered to the polymeric shell, the first adhesive layer comprising a pressure sensitive adhesive layer;
• a first adhesion layer over the first adhesive layer;
• a colorant between the first adhesion layer and the pressure sensitive adhesive layer of the first adhesive layer;
• coupling the sticker to the polymeric shell.