Dental caries: Dental caries is the tooth decay that causes gradual sofetening of enamel and dentine.
It is caused when bacteria act on sugars and produce acids that softens or demineralises the enamel. It happens when masses of bacterial cells together with food particles stick to the teeth to form dental plaque. As plaque covers the teeth, saliva cannot reach the teeth surface to neutralise the acid.
to prevent tooth decay we should brush our teeth after eating to remove the plaque before the bacteria can produce acids.
If left untreated microorganisms may invade the tooth pulp, causing inflammation and infection.