The Influence of Post Bleaching Treatments in Stain Absorption and Microhardness

OBJECTIVES This study investigated the effects of post bleaching treatments to prevent restaining and the change of enamel surface microhardness after dental bleaching in vitro. METHODS Sixty intact human incisor teeth were stained in tea solution and randomly assigned into four groups (n=15). Then samples were bleached for two weeks (8 hours daily) by 15… (More)