35% phosphoric acid was applied during 20 seconds. Teeth were then immersed in the mouthwash for 0, 15, 30, 45 and 60 days.
Se utilizaron 40 dientes sin caries, aplicando ácido fosfórico al 35% durante 20 segundos, y fueron inmersos en el enjuague por 0, 15, 30, 45 y 60 días.