Patent ID: 8044008

Claim:
A dental appliance cleansing composition, which becomes active upon contact with water, that comprises: (a) a chloramine bleaching agent, wherein the chloramine bleaching agent comprises about 1% to about 20% by weight of the composition, (b) a surfactant, (c) an effervescence system, (d) a sequestering agent for alkaline earth metal ions, (e) a drying agent, and (f) FD&C Blue No. 2, wherein the FD&C Blue No. 2 comprises about 0.01% to about 1% by weight of the composition, wherein the FD&C Blue No. 2 has the characteristic of exhibiting a first colorimetric response prior to reaction with the chloramine bleaching agent, wherein the FD&C Blue No. 2 has the characteristic of exhibiting a second colorimetric response when all of the FD&C Blue No. 2 has reacted with the chloramine bleaching agent, wherein a time period between the first colorimetric response and the second colorimetric response is the time period for exposing the dental appliance to the composition, and does not contain a peroxysalt.