Tooth Decay Problem and Its Treatment Tooth decay is one of the most common and frustrating problems faced by people all over the world. Tooth decay is caused by bacteria or germs that accumulate in the mouth. Bacteria form acid that causes erosion decay of the tooth. Tooth cavity is extremely painful condition and if it is not treated properly then it can also affect the adjacent teeth or result in tooth loss. Therefore, it is also recommended to book an appointment when you are troubling with any type of tooth problems. Causes of Tooth Decay The major cause of tooth decay is food and bacteria. A colorless sticky substance known as plaque is constantly accumulated on the teeth and gums which further comprise of certain types of bacteria. These bacteria grow due to sugar content that we take from our food and produce the acids that cause tooth decay. Treatment for tooth decay If your dentists detect erosion on your enamel before it reaches to the dentine, then they may recommend you of repairing the spot. Tooth decay treatment depends upon the severity of the problem. Here are some common treatments of tooth decay.