The results of this meta- analysis showed no significant changes in enamel microhardness when using the 10 % carbamide peroxide bleaching gel over periods of 7 , 14 and 21 days
Several studies have investigated the effect of bleaching on dental tissues .
The evaluation of the effect of home bleaching with 10 % carbamide peroxide is important for assessing alterations in enamel microhardness that may affect dental health in terms of resistance to masticatory forces .
This meta- analysis was performed in order to determine scientific evidence regarding the effects of home vital bleaching with 10 % carbamide peroxide gel on the microhardness of human dental enamel .
Effects of 10% carbamide peroxide treatment and sodium fluoride therapies on human enamel surface microhardness.
This study sought to evaluate the microhardness of enamel su bmi tted to 10 % carbamide peroxide treatment  and different methods of remineralization involving sodium fluoride ( NaF ) .  Non-erupted third molars were used and 75 enamel blocks with st and ardized dimensions ( 4.0 x 4.0 x 2.0 mm ) were obtained . Enamel blocks were r and omly divided into five groups ( n = 15 ) : one control ( no bleaching and no fluoride treatment ) , one receiving a 10 % carbamide peroxide treatment , one receiving 10 % carbamide peroxide plus acidulated phosphate fluoride , one receiving 10 % carbamide peroxide with 0.2 % NaF , and one receiving 10 % carbamide peroxide and 0.05 % NaF. There were no differences among four of the groups ( p > 0.05 ) ; the group receiving 10 % carbamide peroxide only was different from all other groups ( p < 0.05 ) . Based on these results , NaF therapies are recommended during carbamide peroxide bleaching treatments
The results of this meta- analysis showed no significant changes in enamel microhardness when using the 10 % carbamide peroxide bleaching gel over periods of 7 , 14 and 21 days
Several studies have investigated the effect of bleaching on dental tissues .
The evaluation of the effect of home bleaching with 10 % carbamide peroxide is important for assessing alterations in enamel microhardness that may affect dental health in terms of resistance to masticatory forces .
This meta- analysis was performed in order to determine scientific evidence regarding the effects of home vital bleaching with 10 % carbamide peroxide gel on the microhardness of human dental enamel .