The most likely location for a cavity to develop is on the chewing surface of the back teeth. The surfaces are not smooth and there are tiny grooves – “pits and fissures” which trap the bacteria and the food particles. The toothbrush bristles are not able to always reach these dark, moist little crevices. This creates conditions for tooth decay.
Tooth decay causes softening of tooth enamel and refers to the damage to the tooth structure caused by the acids created when plaque bacteria break down sugar in the mouth. If the demineralization from the enamel is left untreated a cavity or hole in the tooth can occur. The following are the stages of tooth decay.