Abstract: An interocclusal appliance includes a maxillary impression preform of a resilient thermoplastic having a low softening temperature, e.g. 36° C., such as an EVA copolymer having approximately thirty percent vinyl acetate. The preform is molded over and unitarily bonded to a base having a planar bottom face contacted by mandibular occlusal surfaces. The base is formed of a thermoplastic having a higher softening temperature, e.g. 70° C., with the bond between the preform and base characterized by high shear strength. The preform includes a bight shaped centric relation positioning channel having a thick footing and draft along lingual, buccal and labial walls. The appliance is fitted by immersion in hot water to soften the preform, seating the maxillary arch within the channel and biting, such that the impression of the maxillary dentition embeds in the softened preform. Upon cooling, the preform is transformed into a reusable resilient encasement for the maxillary dentition.

Abstract: An oral hygiene appliance for cleansing the dorsum by both scraping and irrigation includes an irrigational applicator having a bored stem, the proximal end of which is connected to the mouth of a container filled with an irrigating medium. The distal end of the stem includes an open head configured with a transverse blade supported by a pair of diverging struts. A surface of the blade is roughened for scraping the dorsum. The distal end of the stem includes a nozzle with irrigating medium being discharged onto the dorsum surface on the labial side of the blade when the container is squeezed.

Abstract: A breath system appliance includes a planar thin elongate body having an applicator head at one end and a scraper head at the other end. The applicator head includes a sponge impregnated with a dorsal conditioning medium. The medium may include an antibacterial agent, an antiseptic agent, a flavoring agent, an oxidizing agent and an anesthetizing agent. The conditioning medium is applied as a coating to dorsal surfaces of a user. The scraper head is thereafter applied against dorsal surfaces of the user to dislodge food debris and other odor generating matter from the dorsum of the user. The appliance may be carried in a liquid impervious sealed packet.