Functionalized adhesive coated orthodontic appliances
Assignee3M Innovative Properties Company
InventorsBradley D. Craig, Tsi-Zong Tzou
Life of this patent
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Abstract
Provided are methods for making adhesive coated orthodontic appliances having a silane treated metallic bonding surface, and related assemblies. Exemplary methods of making an adhesive coated orthodontic appliance include providing a metallic bonding surface on the orthodontic appliance for attachment to a tooth surface, sand blasting the bonding surface with a silica-based media, functionalizing the bonding surface in the presence of a pH-modified coupling agent solution, and applying an adhesive onto at least a portion of the bonding surface, where the adhesive is a hydrophilic adhesive having a water uptake of at least 0.5 percent of its original weight after hardening.
Claims17
A method of making an adhesive-coated orthodontic appliance comprising:
- providing a metallic bonding surface on the orthodontic appliance for attachment to a tooth surface;
- sand blasting the bonding surface with a silica-based media;
- functionalizing the bonding surface in the presence of a pH-modified coupling agent solution;
- and
- applying an adhesive onto at least a portion of the bonding surface, the adhesive having an average water uptake of at least 0.5 weight percent relative to its original weight after hardening.
A packaged orthodontic assembly comprising:
- an orthodontic appliance having a functionalized metallic bonding surface for attachment to a tooth surface, the bonding surface functionalized in the presence of a pH-modified coupling agent solution;
- an adhesive in contact with the bonding surface, the adhesive having an average water uptake of at least 0.5 percent of its original weight after hardening;
- and
- a container at least partially surrounding the orthodontic appliance and adhesive thereon.
Dependencies are inferred from the claim text.