Fillings are a common restorative dental procedure used to treat cavities caused by tooth decay. The decayed portion of the tooth is removed, and the resulting hole or cavity is filled with a material such as composite resin, amalgam, or porcelain. The type of filling material used will depend on factors such as the location of the cavity, the severity of the decay, and the patient’s preferences. Fillings can help prevent further decay by sealing off the area and restoring the tooth’s function and appearance. With proper oral hygiene and regular dental checkups, fillings can last for many years.