Tooth Decay is basically damage to the enamel of your tooth. It is caused by the acid in the foods you eat, the drinks you consume, and even the bacteria in your mouth. Tooth decay can be damaging because it leads to cavities, which can damage every part of your tooth.
Tooth decay is easily preventable with good dental health. You need to brush twice daily and floss every day. You also need to watch your diet and limit acidic drinks. It is also important to visit your dentist regularly for examinations and cleanings.