DO brush your teeth at least twice a day for two minutes each time. DO use a fluoride toothpaste. DO brush all surfaces of your teeth, including the fronts, backs, and chewing surfaces. DO replace your toothbrush every three to four months or when the bristles are frayed. DON’T brush too hard, as this can damage your teeth and gums. DON’T forget to floss daily to remove food particles and plaque from between your teeth. DON’T share your toothbrush with others to avoid spreading germs. DON’T brush immediately after consuming acidic foods or drinks, as this can weaken the tooth enamel.