OBJECTIVE: This study evaluated the color change, surface roughness, mineral content and morphology of enamel bleached with 35% hydrogen peroxide (HP) combined with an experimental gel containing 1% titanium tetrafluoride (TiF MATERIALS AND METHODS: Bovine enamel blocks were treated with (n = 12): (TiF) experimental gel containing 1% TiF RESULTS: TiF increased surface roughness, and no differences between HP and HPT in terms of color and CONCLUSIONS: The combination of TiF CLINICAL SIGNIFICANCE: Due to the adverse effects of bleaching, titanium tetrafluoride (TiF