Perio Restore 1.7% Hydrogen Peroxide Oral Cleansing Gel is designed to be worn with trays to deliver medicine below and in-between your gums to help reduce or prevent gingivitis and periodontitis. Perio Restore gel is a suitable treatment for people who want a consistent homecare routine or show any signs of gum disease. Perio Restore also has the added benefit of freshening breath and brightening teeth!