The main aim of Preventive Dentistry is to make your mouth completely healthy and seek to prevent any dental problems from happening or returning. Here the hygienist will thoroughly assess your teeth and gums to know what sort of treatment is apt and required in your case. For that he/she will scale and polish your teeth and then show you the best way to brush and floss to remove the bacterial ‘plaque’ on your teeth and gums. Plaque, which is an invisible film of bacteria on the teeth and gums that is formed when the sugars from the food that you eat turns into acid, eventually causes tooth decay. It can also cause gum inflammation if not regularly and thoroughly removed. The hard tartar (calculus) which builds up on the teeth also starts off as plaque. The best oral care products and practices will suggest in accordance with your diet and daily habits( including smoking, drinking if any).