Dry field tongue guard

A disposable dry field tongue guard for intra-oral usage comprising an evacuation tube including a hook-shaped section that allows the tube to hang over the lower lip and arch as passes into the oral cavity, said tube passing to the lingual side of the arch and having an interior end that projects generally toward the rear of the mouth and includes a hole, a tongue guard sheath having a curvatured top wall containing an aperture in a central region thereof, said interior end of said tube fitting into said aperture so that the hole in said interior end of said tube is disposed inwardly of said tongue guard sheath, said tongue guard sheath having a cavity interior of said aperture, and said hole in said interior tube end being disposed within said cavity, said tongue guard sheath having a number of channels formed interiorly of said curvatured top wall that begin at said cavity and radiate downwardly and outwardly from said cavity to a peripheral edge portion of said tongue guard sheath, said channels extending to both the right and left sides of the arch, a tongue shield for fitting over the tongue and that underlies and cooperates with said tongue guard sheath and the channels therein so that suction force delivered by said tube is communicated through said cavity and said channels to the peripheral edge portion of said tongue guard sheath on both right and left sides of the arch, and a chin blade that is fitted in an adjustable manner on the exterior end of said tube so that the dry field tongue guard can be intra-orally positioned and retained in such a manner that the tongue guard sheath and the tongue shield constrain the tongue while saliva can be evacuated from around the interior of the lower arch by being sucked through said channels, said cavity, and said evacuation tube.