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Egyptian Dental Journal
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Journal Archive
Volume Volume 67 (2021)
Issue Issue 1 - January (Orthodontics, Pediatric & Preventive Dentistry)
Issue Issue 1 - January (Oral Surgery)
Issue Issue 1 - January (Oral Medicine, X-Ray, Oral Biology & Oral Pathology)
Issue Issue 1 - January (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials)
Issue Issue 1 - January (Conservative Dentistry and Endodontics)
Volume Volume 66 (2020)
Volume Volume 65 (2019)
Volume Volume 64 (2018)
Volume Volume 63 (2017)
Volume Volume 62 (2016)
attia, R. (2021). Reversal of deleterious effect of extracoronal in- office bleaching on shear bond strength of composite resin to bleached enamel: Effect of delayed restoration and different antioxidants application - in vitro study. Egyptian Dental Journal, 67(Issue 1 - January (Conservative Dentistry and Endodontics)), 843-856. doi: 10.21608/edj.2021.49934.1347
reham attia. "Reversal of deleterious effect of extracoronal in- office bleaching on shear bond strength of composite resin to bleached enamel: Effect of delayed restoration and different antioxidants application - in vitro study". Egyptian Dental Journal, 67, Issue 1 - January (Conservative Dentistry and Endodontics), 2021, 843-856. doi: 10.21608/edj.2021.49934.1347
attia, R. (2021). 'Reversal of deleterious effect of extracoronal in- office bleaching on shear bond strength of composite resin to bleached enamel: Effect of delayed restoration and different antioxidants application - in vitro study', Egyptian Dental Journal, 67(Issue 1 - January (Conservative Dentistry and Endodontics)), pp. 843-856. doi: 10.21608/edj.2021.49934.1347
attia, R. Reversal of deleterious effect of extracoronal in- office bleaching on shear bond strength of composite resin to bleached enamel: Effect of delayed restoration and different antioxidants application - in vitro study. Egyptian Dental Journal, 2021; 67(Issue 1 - January (Conservative Dentistry and Endodontics)): 843-856. doi: 10.21608/edj.2021.49934.1347

Reversal of deleterious effect of extracoronal in- office bleaching on shear bond strength of composite resin to bleached enamel: Effect of delayed restoration and different antioxidants application - in vitro study

Article 7, Volume 67, Issue 1 - January (Conservative Dentistry and Endodontics), January 2021, Page 843-856  XML PDF (988.93 K)
Document Type: Original Article
DOI: 10.21608/edj.2021.49934.1347
Author
reham attia email orcid
Associate Professor, Faculty of Dentistry Zagazig Universty, Al Sharquia, Zagazig, Egypt
Abstract
Objective:The objective of this in - vitro study was to evaluate the effect of different antioxidants in reversal of of deleterious effect of bleaching on shear bond strength of composite resin to bleached enamel.Materials and methods: Seventy bovine incisors were used. The specimens were randomly divided into seven groups (10 specimens each) as follow: Group 1: no bleaching treatment and no antioxidant application. Group 2: bleaching only without antioxidant application and immediate composite resin application after bleaching. Group 3: bleaching only without antioxidant application and delayed composite application (after 2 weeks) of storage. Group 4: bleaching and application of 10% Alpha-tocopherol.Group 5: bleaching and application of 6% cranberry extract. Group 6:bleaching and application of 10% sodium ascorbate. Group 7: bleaching and application of 10% green tea. 40% hydrogen peroxide (Opalescence Xtra Boost 40%, Ultradent, South Jourdan, UT, USA) was used. Composite resin Tetric N -Ceram was used. The shear bond strength was measured using a universal testing machine. Results: one-way ANOVA test revealed significant differences in shear bond strength among the tested groups (p < 0.001). Bond strength significantly decreased after bleaching. There was no significant difference in shear bond strength reversed using10% Alpha-tocopherol, 10% sodium ascorbate and 10% green tea and delayed restoration. Whereas the difference was significant between group 5(6% cranberry extract) and other antioxidants groups. Conclusion: The results obtained from the use of antioxidants using (10% Alpha-tocopherol, 10% sodium ascorbate and 10% green tea extract) is approximately the same as the delayed restoration.
Keywords
Antioxidants; bleached enamel; composite resins; shear bond strength
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