The primary goal of endodontic treatment is to eliminate infection from the root canal system, restore the tooth's function and aesthetics, and prevent further damage to the tooth.

Gum disease is not a common cause of pulpitis. Deep caries, trauma to the tooth, and cracked tooth syndrome are all more common causes.

Root canal therapy is the most common type of endodontic treatment. It involves removing the infected pulp from the root canal system and sealing the canals to prevent reinfection.

Enlarging the root canals is not a step in root canal therapy. Accessing the pulp chamber, cleaning and shaping the root canals, and filling the root canals are all steps in root canal therapy.

The purpose of cleaning and shaping the root canals is to remove bacteria and debris from the canals, create a smooth surface for the root canal filling, and allow the root canal filling to flow into the canals.

Silver amalgam is not a type of root canal filling material. Gutta-percha, resin-based composite, and zinc oxide-eugenol cement are all types of root canal filling materials.

The purpose of a post and core in endodontic treatment is to strengthen the tooth, support the root canal filling, and provide retention for the crown.

Retrograde filling is not a type of endodontic surgery. Apicoectomy, hemisectomy, and coronectomy are all types of endodontic surgery.

The purpose of an apicoectomy is to remove the infected root tip, seal the root canal system, and prevent further infection.

Patient's poor oral hygiene is not a risk factor for endodontic treatment failure. Inadequate cleaning and shaping of the root canals, improperly fitting root canal filling, and failure to remove all of the infected pulp tissue are all risk factors for endodontic treatment failure.

Pain is the most common complication of endodontic treatment. It is usually mild and goes away within a few days. However, in some cases, pain can be more severe and may require additional treatment.

Tooth discoloration is not a sign of endodontic treatment failure. Pain, swelling, and pus discharge from the tooth are all signs of endodontic treatment failure.

The prognosis for endodontic treatment is excellent. With proper care, a tooth that has been treated endodontically can last for many years.

Improves the patient's quality of life is not a benefit of endodontic treatment. Saves the tooth, prevents the spread of infection, and improves oral health are all benefits of endodontic treatment.

All of the above are important factors in preventing endodontic treatment failure. Proper diagnosis, proper treatment planning, and proper execution of treatment are all essential for successful endodontic treatment.