%0 Journal Article
%T Influence of 10% sodium ascorbate gel application time on composite bond strength to bleached enamel
%A Cintia Gaio Murad
%A Eliseu Aldrighi Munchow
%A Evandro Piva
%A Lucio Ramos Disconzi
%A Renata Correa Pascotto
%A Sandra Kiss Moura
%A Suellen Nunes de Andrade
%J Archive of "Acta Biomaterialia Odontologica Scandinavica".
%D 2016
%R 10.3109/23337931.2016.1152901
%X Objective To analyze bond strength to bleached enamel following application of 10% sodium ascorbate gel. Material and methods Forty third molars were allocated into five groups (n = 8): GP ¨C unbleached specimens restored with composite resin; GN ¨C specimens restored immediately after bleaching; and G15; G30 and G60 (test groups) ¨C bleached specimens treated with 10% sodium ascorbate gel for 15, 30 and 60 min before restoration. The teeth were sectioned and the buccal and lingual faces were restored. After storage in distilled water (37 ¡ãC/24 h), sticks of ¡À0.8 mm2 were tested in tensile (0.5 mm/min). Fractures were observed and classified. Data (in MPa) were analyzed with one-way ANOVA and Tukey tests (¦Á = 0.05). Results No differences were found among GP (26 ¡À 6.0), G15 (23 ¡À 7.3), G30 (25 ¡À 6.1) and G60 (25 ¡À 5.1), with GN (15 ¡À 5.5) showing the lowest bond strength (p < 0.0001). Conclusion The application of 10% sodium ascorbate gel for 15 min after bleaching with 37.5% hydrogen peroxide restored the bonding to enamel
%K Bleaching
%K enamel
%K sodium ascorbate
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5433175/