A system for directing a fluid onto a plurality of surfaces of an oral cavity of a mammal, said system comprising a device comprising: a chamber for maintaining said fluid proximate said plurality of surfaces, said chamber defined by front and rear inner walls and a base inner wall of said device, said base inner wall extending between said front and rear inner walls, said front and rear inner walls comprising a plurality of openings, a first manifold for containing a first portion of said fluid and providing said first portion to said chamber through said openings (122a, 122b) of said front inner wall, a second manifold for containing a second portion of said fluid and providing said second portion to said chamber through said openings of said front inner wall, a third manifold for containing a third portion of said fluid and providing said third portion to said chamber through said openings (126a, 126b) of said rear inner wall, a fourth manifold for containing a fourth portion of said fluid and providing said fourth portion to said chamber through said openings of said rear inner wall, a first port configured to convey said first portion of fluid to and from said first manifold, a second port configured to convey said second portion of fluid to and from said second manifold, a third port configured to convey said third portion of fluid to and from said third manifold, a fourth port configured to convey said fourth portion of fluid to and from said fourth manifold; and means for providing an effective seal (1156, 1158) of said device within said oral cavity; and means for providing pressure, such that said fluid enters the chamber or vacuum, such that fluid leaves the chamber, on said first, second, third, and fourth manifolds (122, 124, 126, 128). a chamber for maintaining said fluid proximate said plurality of surfaces, said chamber defined by front and rear inner walls and a base inner wall of said device, said base inner wall extending between said front and rear inner walls, said front and rear inner walls comprising a plurality of openings, a first manifold for containing a first portion of said fluid and providing said first portion to said chamber through said openings (122a, 122b) of said front inner wall, a second manifold for containing a second portion of said fluid and providing said second portion to said chamber through said openings of said front inner wall, a third manifold for containing a third portion of said fluid and providing said third portion to said chamber through said openings (126a, 126b) of said rear inner wall, a fourth manifold for containing a fourth portion of said fluid and providing said fourth portion to said chamber through said openings of said rear inner wall, a first port configured to convey said first portion of fluid to and from said first manifold, a second port configured to convey said second portion of fluid to and from said second manifold, a third port configured to convey said third portion of fluid to and from said third manifold, a fourth port configured to convey said fourth portion of fluid to and from said fourth manifold; and means for providing an effective seal (1156, 1158) of said device within said oral cavity; and means for providing pressure, such that said fluid enters the chamber or vacuum, such that fluid leaves the chamber, on said first, second, third, and fourth manifolds (122, 124, 126, 128).