Tea Tree Therapy Whitening Toothpaste with Tea Tree Oil provides extra whitening especially if teeth are stained. Dicalcium Phosphate and Silica are gentle low abrasive polishers. They are the same ingredients Dentists use to polish your teeth after a dental cleaning. Tea Tree Oil's natural antiseptic properties inhibit the growth of bacteria which cause plaque and tooth decay. It helps in the treatment of gum conditions and assists in controlling mouth ulcers and bad breath. The formula contains no artificial sweeteners or fluoride and has a pleasant natural mint taste.