Endodontic treatment is necessary when the pulp becomes inflamed or infected. the inflammation or infection can have a variety of causes: deep decay, repeated dental procedures on the tooth or a crack or chip in the tooth. in addition, a blow to a tooth may cause pulp damage even if the tooth has no visible chips or cracks. if pulp inflammation or infection is untreated, it can cause pain or lead to an abscess. Signs of pulp damage include pain, prolonged sensitivity to heat or cold, discoloration of the tooth and swelling and tenderness in the nearby gums. Sometimes, there are no symptoms. The Endodontist removes the inflamed or infected pulp, carefully cleans and shapes the inside of the tooth, then fills and seals the space. Afterwards, you will return to your dentist, who will place a crown or other restoration on the tooth to protect and restore it to full function. After restoration, the tooth continues to function like any other tooth.