Effect of pH on whitening efficacy of 35% hydrogen peroxide and enamel microhardness

ConclusionsDespite the effectiveness of 35% hydrogen peroxide, changes on gel pH did not affect the whitening efficacy, and the enamel was superficially demineralized, regardless of pH values.
Clinical SignificanceIndependently of the pH value of whitening gel, enamel undergoes superficial demineralization and with a reduction in superficial microhardness that does not return to the initial values. However, using hydrogen peroxide with different pH values does not alter the whitening effect.

Source: Journal of Esthetic and Restorative Dentistry - November 12, 2017 Category: Dentistry Authors: Ana Luiza Barbosa Jurema, Mauricio Yugo de Souza, Carlos Rocha Gomes Torres, Alessandra B ühler Borges, Taciana Marco Ferraz Caneppele Tags: SOCIETY OF COLOR Source Type: research