Treatment of recurrent aphthous stomatitis (RAS; aphthae; canker sores) with a barrier forming mouth rinse or topical gel formulation containing hyaluronic acid: a retrospective clinical study.

Within the limitation of retrospective design, it can be concluded that both the barrier forming hyaluronic acid containing mouth rinse as well as the topical gel formulation are effective in the treatment of minor recurrent aphthous stomatitis (RAS), with a trend for an earlier healing onset for the topical Gel formulation.