Non-custom dental treatment trays and mouth guards having improved anatomical features

A pre-shaped, non-customized dental tray device suitable for placement over at least a portion of a person's dental arch, said dental tray device comprising:

• a generally horseshoe-shaped and 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 having an abrupt reduction in width of the bottom wall at a location corresponding to a transition between the posterior region and the anterior region of the barrier layer to account for a significant difference between the occlusal surface width of posterior teeth as compared to anterior teeth,
• 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,
• 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.

A dental tray device kit, comprising:

• a first dental tray device configured for placement over at least a portion of a person's lower dental arch comprising:
• a first generally horseshoe-shaped and flexible 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 a labial-buccal wall, a lingual wall, and a bottom wall interposed between the labial-buccal wall and the lingual wall, 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 such that the barrier layer is adapted to be worn over at least a portion of a person's lower dental arch without customization prior to wearing, the first 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;
• prior to placing the first dental tray device over a person's teeth, the posterior region including a first transition portion between the bottom wall and the lingual wall and a second transition portion between the bottom wall and the labial-buccal wall and wherein the first transition portion has a first radius of curvature (R1) that is less than a second radius of curvature (R2) of the second transition portion;
• and
• a second dental tray device configured for placement over at least a portion of a person's upper dental arch comprising:
• a second generally horseshoe-shaped and flexible 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 a labial-buccal wall, a lingual wall, and a bottom wall interposed between the labial-buccal wall and the lingual wall, 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 such that the barrier layer is adapted to be worn over at least a portion of a person's upper dental arch without customization prior to wearing, the second 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;
• prior to placing the first dental tray device over a person's teeth, the posterior region including a first transition portion between the bottom wall and the lingual wall and a second transition portion between the bottom wall and the labial-buccal wall and wherein the first transition portion has a first radius of curvature (R1) that is greater than a second radius of curvature (R2) of the second transition portion.