Dental fillings, also known as tooth filling, are artificial restorations which are commonly used to treat and restore a damaged tooth back to its original function and appearance.
Dental fillings are required when there are cavities due to decay of teeth structure or fracture/ chipped tooth. This does not mean that you need to wait until there is a hole before dental fillings are required. There could be some early signs which are alerting you that you may require a tooth filling. Some examples include sensitivity to cold or sweet food, persistent tooth aches , or food getting stuck frequently.
The decay inside the tooth is removed by your dentist, the damaged area is cleaned and the clean cavity is then filled with a filling material.
This is an effective procedure that prevents further decay, as it prevents bacteria from multiplying by filling up the extra space inside the tooth.