Patent ID: 7625210

Claim:
An oral treatment device adapted for placement over a person's teeth, comprising: a barrier layer comprised of a moisture-resistant material and being sized and configured for placement over a person's teeth, said barrier layer having an inner surface, an outer surface, and at least one rim or outer periphery; and a hydrophilic protective adhesive composition positioned over a portion of said inner surface of said barrier layer at or near said at least one rim or outer periphery, said protective adhesive composition comprising at least one hydrophilic tissue adhesion agent that includes at least one hydrophilic polymer, wherein a substantial portion of said inner surface of said barrier layer remains uncovered by said protective adhesive composition so as to permit placement of a treatment composition onto and into direct contact with said inner surface of said barrier layer, wherein said protective adhesive composition is readily adhesive to moist oral tissues, wherein said protective adhesive composition is positioned at or near said at least one rim or outer periphery of said barrier layer so as to contact at least one of a user's gingival margin or gums during use and so that said protective adhesive composition, in combination with said barrier layer, is adapted to at least partially confine a treatment composition when positioned adjacent to and in direct contact with said inner layer of said barrier layer to a desired location on the user's teeth and/or gums during use.