Corsodyl chlorhexidine dental gel helps prevent and treat gum disease it contains the active ingredient chlohexidine which when used daily has been proven to help prevent the formation and buildup of plaque on the teethwhat is it used forprevents the buildup of plaque on the teethhelps maintain oral hygieneprevents and treats gum disease gingivitisprevents tooth decay in people at high risk for example people with a dry mouth due to poorly functioning salivary glands xerostomiapromotes gu