It is important that you brush last thing at night and at least one other time during the day, with a toothpaste containing fluoride.
Eating and drinking foods containing sugar and acids naturally weakens the enamel on your teeth. Brushing straight afterwards can cause tiny particles of enamel to be brushed away. It is best not to brush your teeth until at least one hour after eating.
It is especially important to brush before bed. This is because the flow of saliva, which is the mouth’s own cleaning system, slows down during the night and this leaves the mouth more at risk from tooth decay.
It is important to clean your teeth for two minutes, twice a day especially last thing at night and at least one other time during the day. Usually two minutes is enough to remove plaque and to clean properly. Some people find using a stop-watch or timer useful as two minutes is often longer than you think. If you eat or drink certain sugary or acidic foods you may need to clean more often.