Dal T, et al. – The efficacy of the new cross–linked hyaluronan gel—PureRegen Gel Sinus was examined on wound healing and synechiae prevention in endoscopic frontal sinus surgery. In PureRegen Gel Sinus applied patients, rapid reepithelization and control of infection related granulation tissue formation with antibiotics in the early postoperative period might indicate the low stenosis rate in frontal sinus ostia.