bleaching treatment. In Group IA, the labial surface of each specimen was etched with 37% phosphoric acid for 15 seconds, rinsed with water for 20 seconds and bonded with Prime & Bond NT. This was then followed by composite resin build-up of 3mm diameter and 3 mm height (Figure – 2, 3). In Group IB, the labial surface of each specimen was etched with 37% phosphoric acid for 15 seconds, rinsed with water for 20 seconds and bonded with Xeno V as per the manufacturer’s instructions. This was followed by composite build-up of 3mm diameter and 3 mm height. In Group IIA, the specimens were bleached and rinsed followed by composite build up similar to Group IA using Prime & Bond NT adhesive system. In Group IIB, the specimens were bleached and rinsed followed by composite build up similar to Group IB using Xeno V adhesive system.
bleaching treatment. In Group IA, the labial surface of each specimen was etched with 37% phosphoric acid for 15 seconds, rinsed with water for 20 seconds and bonded with Prime & Bond NT. This was then followed by composite resin build-up of 3mm diameter and 3 mm height (Figure – 2, 3). In Group IB, the labial surface of each specimen was etched with 37% phosphoric acid for 15 seconds, rinsed with water for 20 seconds and bonded with Xeno V as per the manufacturer’s instructions. This was followed by composite build-up of 3mm diameter and 3 mm height. In Group IIA, the specimens were bleached and rinsed followed by composite build up similar to Group IA using Prime & Bond NT adhesive system. In Group IIB, the specimens were bleached and rinsed followed by composite build up similar to Group IB using Xeno V adhesive system.
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