Abstract: A heated mouthpiece includes an upper trough and optionally a lower trough for interfacing with teeth of a user and a heat retention mass that is thermally and physically interfaced to the trough(s). External heat is provided to the heat retention mass from, for example, by immersion in hot water or the mouthpiece is heated in a microwave oven. An oral compound such as a teeth whitening compound is set in the trough(s) and the mouthpiece is inserted into the user's mouth, the trough(s) surround the teeth. Heat from the heat retention mass conducts to the trough(s) while the mouthpiece section is in use within the mouth thereby activating the oral compound.

Abstract: An application for a heated mouthpiece includes a mouthpiece section for insertion into the mouth of a user and a heat retention mass connected to the mouthpiece section and in thermal contact with the mouthpiece section whereby external heat provided to the heat retention mass before insertion into the mouth is partially retained by the heat retention mass and conducts to the mouthpiece section while the mouthpiece section is in use within the mouth.