Ra'ed S Abul Hassan

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OBJECTIVE To compare the efficacy of tooth bleaching after using ozone, before and after application of hydrogen peroxide (H2O2). METHOD AND MATERIALS In total, 120 extracted teeth were assigned to three groups (n = 40 in each group). Teeth were bleached using 38% H2O2 application for 20 minutes followed by use of the ozone (delivered by means of the(More)
OBJECTIVES The purpose of this study was to evaluate the efficiency of bleaching after combining ozone and 38% H2O2 in comparison to the sole use of 38% H2O2. METHODS Consecutive 26 participants (13 males and 13 females) were recruited into this study. They were randomly allocated into 2 groups (n=13 for each group). In group 1 (test group); the(More)
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