Yildirim S, et al. - An examiner-blind, randomized, controlled clinical trial is carried out to assess the impacts of two different concentrations of topical hyaluronic-acid on postoperative patient discomfort and wound healing of palatal donor sites following free gingival graft (FGG) surgery. The outcome suggests that the topical application of hyaluronic-acid shows positive effect on post-operative pain, burning sensation and accelerates palatal wound healing in terms of epithelization and color match.