When decay rots away tooth structure, the resulting space is called a cavity. Left untreated, the decay will eventually cause extensive damage to the tooth and potentially cause the root to be infected. However, if the cavity is caught early, your dentist can treat it with a simple filling, typically in one appointment.
Your dentist will first apply a local anesthetic, then use a handpiece to remove the decay. They will then place a restoration (filling) to rebuild your tooth. The filling is applied in layers and hardened with a special light. The final layer is shaped and polished to restore the tooth’s appearance and function.
Composite (plastic resin) is the modern filling material of choice in most cases. Silver amalgam fillings were commonly used in the past . Since the composite material closely matches the colour of the tooth, fillings are nearly invisible!