Patent ID: 7819122

Claim:
A mouth guard adapted to be seated at least partially on an upper jaw of a user to reduce resistance of air flow in a nasal channel of the user, comprising: a lateral wall; a lingual wall; and an occlusal wall connecting the lateral wall and the lingual wall so that when the mouth guard is seated at least partially on the upper jaw, the mouth guard is adapted to be held in place by contact of the lateral wall and the lingual wall with teeth of the upper jaw; and a flange extends extending from the lateral wall and adapted to be positioned between the upper jaw and an associated upper lip such that the flange extends above a gum line of the upper jaw and urges the upper lip away from the upper jaw, thereby dilating the nasal channel to reduce resistance of air flow in the nasal channel; and a chamber within the flange having an adjustable volume so that the upper lip is selectively urged away from the upper jaw when the mouth guard is seated at least partially on the upper jaw; wherein the mouth guard is shaped to fit securely over a portion of the upper jaw.