Tooth decay is caused by how frequently we snack and how long you are exposed to food at any one time. Every time you eat, your teeth are exposed to the sugars in food, this is called an ‘acid attack’. The bacteria in your mouth (plaque) use these sugars to make acid and if teeth are exposed to this acid long enough holes develop -this is known as tooth decay. – See more at:
http://www.dentalhealthweek.com.au/Adults/SportsOralHealth/acid-attacks.html#sthash.ZVUKQNz8.dpuf