We all know the advice for healthy teeth -- brush twice daily and don't eat too much sugar. So why do those of us following these instructions find we sometimes need a filling when we visit the dentist? The mechanical act of brushing removes the very sticky dental plaque -- a mixture of bacteria, their acids and sticky byproducts and food remnants. Taking two minutes to brush your teeth is a good target for removing plaque and you should brush at night and one other time daily. Brushing frequently stops the bacteria developing to a stage where the species which produce the most acid can become established.

Source: CNN May 03, 2019 08:37 UTC