Dental tray system with releasable hold inner and outer dental trays

A dental treatment system for use in applying a treatment composition to a person's teeth, comprising:

• an inner dental treatment tray having a tray configuration so as to fit over at least a portion of a person's upper or lower dental arch, the treatment tray having a thickness and flexibility so that it at least partially conforms to the person's dental arch without heating when used in combination with a dental treatment or adhesive composition;
• an outer support tray positioned adjacent to the inner dental treatment tray so as to assist in maintaining the inner dental treatment tray in a desired configuration prior to and during placement of the inner dental treatment tray over the person's teeth;
• and
• a weak adhesive disposed between the inner dental treatment tray and the outer support tray, the weak adhesive maintaining the outer support tray adjacent to the inner dental treatment tray prior to and during placement of the inner dental treatment tray over the person's teeth, and permitting easy removal of the outer tray once the inner tray has been placed onto the teeth so that the outer tray is not worn as the inner tray is conformed and then used during treatment of the teeth, and wherein the weak adhesive is selected from the group of glycerin, polyethylene glycol, adhesive silicons, petrolatum, mineral oil, sticky polymers combined with water or solvents, sticky resins, or combinations of the foregoing.

In a dental treatment system for use in applying a treatment composition to a person's teeth, the dental treatment system having an inner dental treatment tray with a tray configuration so as to fit over at least a portion of a person's upper or lower dental arch, the treatment tray having a thickness and flexibility so that it at least partially conforms to the person's dental arch without heating when used in combination with a dental treatment or adhesive composition, an outer support tray positioned adjacent to the inner dental treatment tray so as to assist in maintaining the inner dental treatment tray in a desired configuration prior to and during placement of the inner dental treatment tray over the person's teeth, and a weak adhesive disposed between the inner dental treatment tray and the outer support tray, a method for bleaching a person's teeth, comprising:

• prior to separation and while held together by the weak adhesive, placing both the inner dental treatment tray and the outer support tray over at least a portion of the person's teeth and then removing the outer support tray;
• forming the inner treatment tray to conform it to the teeth;
• and
• the dental treatment composition then adhering and retaining the inner dental treatment tray against the person's teeth during the desired time period for treatment.