An aqueous tooth whitening liquid composition comprising an orally acceptable vehicle comprising water and monohydric alcohol having dispersed therein a film forming combination of a poly(ethylene oxide) and a Carbomer, the pH of the composition being adjusted to and maintained at, an acid value.

Oral phototherapy applicators are disclosed that are sized and shaped so as to fit at least partially in a user's mouth and have at least one radiation emitting element coupled to an apparatus body to irradiate a portion of the oral cavity with phototherapeutic radiation along multiple directions. In one aspect, the apparatus is configured to direct radiation to at least one portion of the oral cavity, such as the teeth, cheeks, tongue, palate, throat, lymphatic tissue, blood, glands, follicles, collagen, pigmentation or facial tissue, generally. The apparatus can further include bristles to provide a phototherapeutic toothbrush. Alternatively, the apparatus body can be adapted for placement in a fixed position relative to the oral cavity during phototherapy.

Oral phototherapy applicators are disclosed that are sized and shaped so as to fit at least partially in a user's mouth with a plurality of bristles of elongate shape coupled to an apparatus body. The Applicators can be adapted to brush the user's teeth and further include at least one radiation emitter coupled to the body to provide phototherapeutic radiation to a portion of the oral cavity other than tissue in contact with the bristles. In one embodiment, the phototherapy emitter irradiates both a region of tissue in contact with the bristles and a portion of the oral cavity that is not in contact with the apparatus. For example, the apparatus can include at least one emitter that irradiates tooth tissue in contact with the bristles and gum tissue surrounding the tooth tissue.

Oral treatment devices include a barrier layer and an oral treatment composition, and optionally an auxiliary adhesive composition, that acts as an endoskeleton so as to at least partially contribute to maintaining the barrier layer in the shape of a dental tray, or in a tray-like configuration, prior to use. The barrier layer protects the oral treatment and/or adhesive composition from saliva or moisture during use. The treatment and/or auxiliary adhesive compositions can have a consistency ranging from a sticky, viscous gel or a solid. They preferably include a tissue adhesion agent comprising a hydrophilic polymer.

A packaged tooth whitening product is provided. The package includes a substrate having a first side and a second side, wherein the substrate is sized for use in a human user's oral cavity. A first composition including a tooth whitening agent is disposed adjacent the first side of the substrate. A second composition including an aesthetic agent disposed adjacent the second side of the substrate.