When oral hygiene is jeopardized the most common dental problems caused are cavities and tooth decay. Cavities are holes in your teeth that appear due to tooth decay caused by bacterial infection. Such bacteria demineralize the teeth and destroy the teeth tissues. Apart from poor dental hygiene, other common factors that cause tooth decay and subsequent cavities are frequent snacking, food stuck in between teeth, flouride deficiency, dental devices, anorexia, bulimia and dry mouth. The most common symptoms of tooth decay are toothache, sensitivity in teeth, visible pits, and stains. Like they say, prevention is the best cure, you can treat tooth decay right at home at the very first appearance of its symptoms. Here are some home remedies to prevent tooth decay and cavities.