Endodontic materials are used to obturate and seal root canals after pulp tissue destruction and infection. Common materials include irrigants like sodium hypochlorite and EDTA to clean canals, calcium hydroxide as an intracanal medication, and gutta percha or resin for bulk filling. Canals are sealed with materials like GIC, zinc oxide eugenol, or resin sealants. Newer repair materials like MTA are also used for surgeries and defects.