Patent ID: 8721332

Claim:
A pre-shaped, non-customized dental tray device suitable for placement over at least a portion of a person's dental arch, the dental tray device comprising: a generally horseshoe-shaped moisture resistant barrier layer configured to substantially correspond to the curvature of a person's dental arch and having sufficient flexibility without heating in boiling water so as to readily conform to a plurality of differently sized dental arches corresponding to different people without customization; the barrier layer having an anterior region that at least partially covers anterior teeth surfaces when worn and a posterior region that at least partially covers posterior teeth surfaces when worn; the barrier layer being substantially devoid of structures corresponding to the size and shape of a person's unique dentition so that the barrier layer is designed to comfortably fit over a plurality of differently-sized and/or shaped teeth corresponding to different people; and the barrier layer having a labial-buccal wall in the posterior and anterior regions, a lingual wall in the anterior region but not the posterior region, and a bottom wall interposed between the labial-buccal wall and the lingual wall in the anterior region and extending laterally relative to the labial-buccal wall in the posterior region, wherein a width of the bottom wall in the posterior region is equal to or less than a width of the bottom wall in the anterior region.