Abstract: There is herein described a dental kit comprising a dental aligner or mouth tray and dissolvable films. More particularly, there is described a dental kit comprising a dental aligner or mouth tray and dissolvable films wherein the dental aligner acts to straighten teeth and the dissolvable film may 5 contain active ingredients that may promote whitening and/or reduction of dental hypersensitivity (DH) in teeth.

Abstract: The present invention provides a tooth whitening film. The tooth whitening film comprises a dental bleaching agent comprising one or both of a non-hydrogen peroxide bleaching agent and hydrogen peroxide in a hydrogen peroxide-polymer complex, one or more polyphosphates, said one or more polyphosphates comprising one or more cyclic polyphosphates, one or more water soluble film-forming polymers, one or more plasticizers and one or more emulsifiers, wherein the film has a thickness from about 50 ?m to about 500 ?m. A kit comprising one or more such films having a thickness from about 50 ?m to about 150 ?m and a dental aligner is also provided. A process for the manufacture of the film is also provided, together with a method of using such a film to bleach teeth.