Abstract: A bruxism guard is described. The bruxism guard includes a first U shaped tray having a top surface and a bottom surface, the top surface including a trough with a dental insert positioned therein, wherein the dental insert substantially conforms to a full arch of a subject's teeth, and a second U shaped tray having a top surface and a bottom surface, the top surface including a trough with a dental insert positioned therein, wherein the dental insert substantially conforms to a only a partial arch of the subject's teeth, wherein the bottom surfaces of the first and second trays oppose each other when positioned within the subject's mouth. Also described is a bruxism guard having a removable T-Bar that permits the bruxism guard to be interlocked in at least four different configurations.

Abstract: An oral appliance assembly is described. The assembly includes an oral appliance component having an upper teeth tray and a lower teeth tray. The assembly further includes a module releasably connected to the oral appliance. The module includes at least one sensor that is positioned outside of the mouth and underneath the nares of a subject's nose when the oral appliance component is positioned in the subject's mouth. A method of measuring user compliance of an oral appliance is also described. The method includes positioning an oral appliance in the mouth of a subject, measuring at least one parameter of airflow from the subject's nose or mouth, and determining compliance based on the at least one measured parameter. A method of measuring effectiveness of an oral appliance is also described.