Some studies have shown that bleaching is enough to improve esthetics results. Active agents of carbamide peroxide (10-20%) and hydrogen peroxide (1-10%) can be used on vital teeth (30). The association of home and in-office bleaching is interesting in more resistant cases or when the time of treatment has to be shortened. In these cases, the treatment must begin with 35% hydrogen peroxide, and be followed by home teeth bleaching under
professional supervision. Composite resin and resin-modified glass ionomer are also used for treating discolored areas(TFI = 1-3). Composite restorations can be associated to microabrasion or to esthetic veneers in cases of type TFI≥5. For TFI =8-9, the use of prosthetic crowns might be needed (27).