BLEACHING PROCEDURE 1) NON-VITAL/INTRACORONAL BLEACHING a) In-office thermocatalytic bleaching b) Walking bleach. 2) VITAL/ EXTRACORONAL BLEACHING a) In-office thermocatalytic bleaching b) In-office power bleaching c) In-office bleaching for fluorosed teeth d) At home vital bleaching ( Night guard bleaching). 1) NON-VITAL BLEACHING- Pre- requisites for non-vital bleaching- 1) Good quality 3 dimensional obturation with gutta percha. 2) Asymptomatic teeth. 3) No periapical lesions. Indications- 1) Non vital bleaching is best suited for intact anterior teeth that have discoloured due to intrapulpal hemorrhage or pulp necrosis. Contraindications- 1) Extensive tooth loss 2) Presence of cracks and hypoplastic areas 3) Presence of discolouration due to metallic salts 4) Extensive restoration. Preliminary preparation 1) Thorough cleaning and polishing of the tooth to check the degree of discolouration. 2) Shade selection 3) Refi...