Apexogenesis is a procedure completed on children whose pulp tissue has been damaged or infected in the crown of the tooth and the root canal has not completely formed. The damaged or infected pulp tissue in the crown of the tooth is removed and the remaining healthy pulp tissue is left in the root canal in order for the root to continue development. The remaining pulp tissue is covered with a specific material that encourages growth. The tip of the root (apex), and the canal walls, will continue to develop as the child ages. No additional treatment is necessary if the pulp heals. Tooth survival increases the more mature the root becomes.