Toothache caused by tooth decay is mostly associated with the consumption of hot or cold drinks, and sweet or sour foods. When caries is not treated, the damage can penetrate inside the tooth up to 2 dentines, after destroying the outer protective layer that is the enamel.
Below the dentin is the pulp, which is a soft tissue with a large number of nerve endings. It is commonly referred to as the “dental nerve,” and when external stimuli can penetrate inside, it causes tissue irritation and pain.
Over time, bacteria can get inside the tooth and cause an infection of the inner soft tissues. When this happens, instead of acute and temporary pain, the caries can continue to show a continuous pain that is not possible to soothe even with analgesics.
