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Bond Strength of Composite Resin to Enamel Bleached with Carbamide Peroxide
Author(s) -
Cvitko Elizabeth,
Denehy Gerald E.,
Swift Edward J.,
Pires Jose Antonio F.
Publication year - 1991
Publication title -
journal of esthetic and restorative dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.919
H-Index - 60
eISSN - 1708-8240
pISSN - 1496-4155
DOI - 10.1111/j.1708-8240.1991.tb00976.x
Subject(s) - enamel paint , hydrogen peroxide , carbamide peroxide , bond strength , composite number , peroxide , composite material , materials science , shear strength (soil) , dentistry , chemistry , adhesive , organic chemistry , medicine , layer (electronics) , environmental science , soil science , soil water
Bleaching with 35 percent hydrogen peroxide causes enamel surface changes, which result in lower bond strengths of composite resin. Although a previous SEM study showed that home bleaching with 10 percent carbamide peroxide does not cause such surface changes, the results of our study indicate that carbamide peroxide bleaching reduces the shear bond strength of composite to etched enamel. Removal of surface enamel, however, restores bond strengths to normal levels.