TODENTJ-25-03-2019_TODENTJ-10-720 1553506897 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 12 30 2016 10 1 Ladan Ranjbar Omrani Parastoo Sabouri Mehdi Abbasi Elham Ahmadi Maryam Ghavam Background: Studies have shown a reduction in bond strength of composites and glass ionomer to bleached enamel and dentin. Several methods have been proposed to reverse compromised bond strength. Objective: The aim of this study was to evaluate the effect of delayed bonding and application of antioxidant agent on the bond strength of reinforced self-cured (Fuji IX) and light-cured glass ionomers (Fuji II LC) to bleached dentin. Material: Eighty extracted third molars were randomly divided into 8 groups. Buccal dentin surfaces received different treatments: Two control groups: no treatment + bonding Fuji IX or Fuji II LC. Two immediate bonding groups: bleaching + bonding Fuji IX or Fuji II LC. Two delayed bonding groups: bleaching + 7 days delay + bonding Fuji IX or Fuji II LC. Two sodium ascorbate application groups: Bleaching + application of 10% sodium ascorbate + bonding Fuji IX or Fuji II LC. All samples were tested for shear bond strength. Two-way analysis of variance (ANOVA) was used to compare the mean and standard deviations among groups, followed by the Tukey’s test for significant interaction. Results: No statistically significant difference was detected in shear bond strength of Fuji IX to bleached or normal dentin. Although a significant reduction was found shear bond strength values of Fuji II LC to bleached dentin, no significant difference was observed between no bleaching group and those treated with 10% sodium ascorbate or 7 days of delay in bonding for both types of glass ionomer. Conclusion: Bleaching had no significant effect on shear bond strength of Fuji IX to dentin; this type of GI can be used immediately after bleaching. 12 30 2016 720 727 TODENTJ-10-720 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2016-05-28 2016-09-25 2016-10-15 2016-12-30 https://creativecommons.org/licenses/by/4.0/legalcode 10.2174/1874210601610010720 1553506897 https://opendentistryjournal.com/VOLUME/10/PAGE/720/ https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-720/TODENTJ-10-720.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-720/TODENTJ-10-720.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-720/TODENTJ-10-720.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-720/TODENTJ-10-720.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-720/TODENTJ-10-720.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-720/TODENTJ-10-720.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-720/TODENTJ-10-720.pdf https://opendentistryjournal.com/contents/volumes/V10/TODENTJ-10-720/TODENTJ-10-720.xml South Afr Dental J Omrani L. 71 58 2016 Omrani L, Taher A, Albujeer A, et al. 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