A root canal treatment in Arrowhead is performed to save a severely infected tooth. It becomes necessary when the pulp, the soft tissue in the tooth, becomes infected or inflamed. This can occur due to deep decay, cracked tooth, or repeated dental procedures. The endodontist removes the infected pulp to prevent the spread of infection and to alleviate the severe pain often associated with the condition. The tooth is numbed to ensure the patient's comfort throughout the procedure. Once the tooth is numb, the dentist creates a small access hole in the tooth's crown to reach the pulp cavity.