Disclosed are articles and oral compositions which enable positioning material(s) which absorb oral fluids into controlled, direct contact with at least one dental arch, or portion thereof, of a subject at the location where teeth emerge from dental arch gum tissue, in a manner conducive to increasing crevicular fluid flow while maintaining a relatively dry application field for a therapeutic and/or cosmetic result effecting period of time. The method is applicable to introduction of gingivally absorbed substances and to treatment of, for instance, periodontal gum disease wherein bacteria is swept along in the crevicular fluid and lysed.