Root canal treatment is an attempt to retain a tooth that may otherwise require extraction. Although root canal therapy has a high degree of success, it cannot be guaranteed. Occasionally a tooth that has had root canal therapy may require treatment, surgery, or even extraction. I also understand that the root canal filling restores only the root portion of the tooth. The crown portion must be restored by an additional procedure, for an additional expense. I agree that if I do not pay for my dental treatment, I will be responsible for paying all collections costs and fees.