A kit includes a multi-phase oral composition for whitening teeth and an electromagnetic radiation source. The multi-phase oral composition for whitening teeth includes from about 0.002% to about 30%, by weight of the multi-phase oral composition, of a discontinuous aqueous phase having a bleaching agent, where a concentration of the bleaching agent is up to 10%, by weight of the multi-phase oral composition, and at least about 50%, by weight of the multi-phase oral composition, of a continuous hydrophobic phase of petrolatum. The electromagnetic radiation source is capable of directing electromagnetic radiation with one or more wavelength in the range from about 200 nm to about 1700 nm toward at least one tooth. The electromagnetic radiation source emits electromagnetic radiation in a range from about 100 mW/cm.sup.2 to about 250 mW/cm.sup.2.

Automated devices for detecting and removing dental biofilms are described herein. In some embodiments, the disclosed subject matter includes a device for administering a suspension comprising iron oxide nanoparticles to teeth to chemically treat and mechanically remove dental biofilms. In some embodiments, disclosed subject matter includes a device for administering a suspension comprising iron oxide nanoparticles and hydrogen peroxide to teeth to kill bacteria within a biofilm matrix and degrade the biofilm matrix and assembling the iron oxide nanoparticles into autonomous magnetic bristles or antimicrobial robots to mechanically remove biofilm. Devices and methods for real-time detection of dental plaque and monitoring of removal of dental plaque are also disclosed herein.

A method of whitening teeth that decreases the amount of time that the whitening composition is in contact with the teeth. Specifically, by pretreating the whitening composition with light before contacting the teeth with the whitening composition, the amount of time that the whitening composition needs to be in contact with the teeth can be reduced. In one aspect, the method may include dispensing a tooth whitening composition from a reservoir device into a channel of a mouth tray; activating an electromagnetic radiation source to emit light onto the tooth whitening composition in the channel of the mouth tray for a first period of time to pretreat the tooth whitening composition; and inserting the mouth tray into the oral cavity of the user so that the user's teeth are in contact with the tooth whitening composition in the channel for a second period of time to whiten the teeth.

An oral care kit comprising an oral care implement having a first reservoir containing a first oral care agent comprising a first whitening reagent that includes triacetin; and a container having a second reservoir containing a second oral care agent, the second oral care agent comprising a catalytic enzyme and a second whitening reagent that includes peroxide forming compound.

Multi-phase oral care compositions for whitening teeth including hydrophilic bleaching agent particles in a hydrophobic phase with a cone penetration consistency value of from about 25 to about 300. The hydrophilic bleaching agent particles can include peroxide compounds and/or hydrogen peroxide adducts. The hydrophilic bleaching agent particle can have a solubility in water of at least about 20 parts, by weight of the particles, in about 100 parts, by weight, of water.

This disclosure relates to oral care mouthpieces and methods of forming oral care mouthpieces. A disclosed oral care mouthpiece includes a base shaped to a dental arch. The base elastically deforms in response to pressure variations in the mouthpiece, The mouthpiece also includes a set of one or more supports attached to the base and placed to allow the base to elastically deform in response to the pressure variations in the mouthpiece. The mouthpiece also includes a set of oral care elements attached to the set of one or more supports and placed to transmit pressure to the dental arch when the base elastically deforms in response to the pressure variations in the mouthpiece.

Oral treatment devices formed from wax-based compositions that are thermally stable when formed into a three-dimensional shape to a temperature of at least 45° C. and plastically deformable at room temperature (25° C.). The wax-based compositions include a wax fraction homogeneously blended with a polymer fraction. The wax fraction includes at least one wax. The polymer fraction includes at least one polymer selected such that, when the wax and polymer are homogeneously blended together, they yield a wax-based composition having the desired properties of thermal stability and plastic deformability. Oral treatment devices are dimensionally stable to a temperature of at least 40° C. without external support and can be plastically deformed in a user's mouth to become at least partially customized to the size and shape of user's unique dentition and/or an appliance in a user's mouth.

Semisolid oral dispersions for improving the health and/or appearance of the oral cavity. The semisolid oral dispersions include hydrophilic active agent particles in hydrophobic phase. The hydrophilic active agent particles can include bleaching agents, antimicrobial agents, anticalculus agents, and/or combinations thereof. The hydrophilic active agent particle can have a solubility in water of at least about 20 parts, by weight of the particles, in about 100 parts, by weight, of water. The hydrophobic phase can be semisolid petrolatum.

The present invention relates to a mouthpiece for teeth whitening. Particularly, it relates to a mouthpiece for teeth whitening to alleviate dilution of a tooth whitening gel by saliva and to improve breathing of a user. The first aspect of the invention relates to a mouthpiece for teeth whitening comprises a body and a tongue rest, and the body further comprises an outer surface, an inner surface and an air vent penetrating the outer surface and the inner surface. The air vent has an inner side opening formed at a portion extending toward the user's oral cavity by a predetermined length from the inner surface, and an extended portion of the air vent toward the user's oral cavity is connected to the tongue rest.

An oral tray for conditioning teeth within a mouth of a user includes a first tray layer and a second tray layer. The first tray layer is configured to engage teeth within the mouth of the user. The first tray layer can have a first Young's modulus of greater than 0.60 and less than 1.50. The first tray layer can have a first tray thickness of greater than 0.40 mm and less than 0.90 mm. The second tray layer is coupled to the first tray layer. The second tray layer has a plurality of tooth portions each including a recess. Each recess is configured to receive a tooth conditioner. The second tray layer can have a second Young's modulus of greater than 0.02 and less than 0.30. The second tray layer can have a second tray thickness of greater than 0.80 mm and less than 1.30 mm.