Porcelain teeth for all-ceramic teeth do not necessarily need to do root canal treatment, if the affected tooth pulp is healthy, there is no need to do root canal treatment, if there is inflammation or necrosis of the pulp of the affected tooth, you need to carry out root canal treatment in the line of the full-crown restoration, as follows. 1. Healthy pulp of the affected tooth: If the pulp of the affected tooth has normal vitality without signs of congestion, inflammation, necrosis, etc., and the remaining tooth tissue is thick enough so that the pulp will not be exposed during tooth preparation again, and no mechanical stimulation will lead to pulpitis, root canal treatment is not necessary. 2. Inflammation or necrosis of the pulp of the affected tooth: If the affected tooth shows signs of pulpitis or if pulp necrosis has already occurred, root canal treatment should be carried out as early as possible, and full crown restoration should be carried out after the inflammation is eliminated. It is recommended to go to the hospital to receive regular treatment.