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 .
Peroxide bleaching agent effects on enamel surface microhardness, roughness and morphology.
The aim of this study was to evaluate the surface roughness , microhardness and morphology of human enamel exposed to six bleaching agents ( at baseline and post-treatment ) . Human dental enamel sample s were obtained from human third molars and r and omly divided into seven groups ( n = 11 ) : control , Whiteness Perfect--10 % carbamide peroxide ( 10 % CP ) , Colgate Platinum--10 % CP , Day White 2Z--7.5 % hydrogen peroxide ( 7.5 % HP ) , Whiteness Super--3 % CP , Opalescence Quick--35 % CP and Whiteness HP--35 % HP . Bleaching agents were applied according to manufacturers ' instructions . The control group remained not treated and stored in artificial saliva . Microhardness testing was performed with a Knoop indentor and surface roughness was analyzed with a profilometer . Morphologic observations were carried out with scanning electron microscopy ( SEM ) . Results were statistically analyzed by two-way analysis of variance and Tukey 's test ( 5 % ) , and revealed a significant decrease in microhardness values and a significant increase in surface roughness post-bleaching . Changes in enamel morphology after bleaching were observed under SEM . It was concluded that bleaching agents can alter the microhardness , roughness and morphology of dental enamel surface
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 .