The benefit of root canal treatment is that it can eliminate tooth inflammation and resolve the pain, the disadvantage is that the tooth tends to become weak after root canal treatment. 1. Root canal treatment is necessary: when the pulp is in a state of irreducible inflammation, severe toothache can occur, seriously affecting life and work. Root canal treatment removes the inflamed pulp, resolves the pain and protects oral dental health. Root canal treatment can preserve the integrity of the tooth without damaging the tissues around the root tip. 2. Disadvantages of Root Canal Treatment: After root canal treatment, the tooth loses blood supply and is not as resistant to fracture as before. When chewing hard food, there may be a risk of the tooth splitting. It is recommended to choose crown treatment according to the doctor’s instructions after root canal treatment to avoid splitting of the tooth, and to seek medical treatment in time if there is any discomfort.