title: A comparison of the bleaching effectiveness of chlorine dioxide and hydrogen peroxide on dental composite.
abstract: This study was carried out to verify if composites could be bleached using chlorine dioxide as compared with hydrogen peroxide. 3M ESPE Filtek Z350 Universal Restorative discs were prepared (n=40), with dimensions 5 mm diameter x 2 mm thickness. The discs were divided into 4 groups of 10 discs each. Color assessment was performed by CIEDE2000. The discs were stained with coffee, tea, wine and distilled water (control) solutions for 14 days, 5 hours daily. Color assessment was repeated on stained discs and followed by bleaching of 5 discs from each group using chlorine dioxide and hydrogen peroxide in-office systems. Finally, a last color assessment was performed and compared statistically. DE2000 after bleaching was very close to baseline for both the bleaching agents, although chlorine dioxide showed better results than hydrogen peroxide. After staining, there was a clinically significant discoloration (∆E2000≥3.43) for the tea, coffee and wine groups, and discoloration (∆E2000) was seen more in the wine group as compared to tea and coffee. Overall, the control group (distilled water) had the least color change in the three intervals. After bleaching, the color in all specimens returned close to the baseline. The color differences between bleaching and baseline were less than 3.43 for all groups. The obtained results show that chlorine dioxide is slightly superior to hydrogen peroxide in the bleaching of composites, while maintaining the shade of the composite close to the baseline.
authors.affiliation: Divya Jyoti College of Dental Sciences and Research, Ghaziabad, Uttar Pradesh, India.
authors.forename: Anirudha
authors.initials: A
authors.lastname: Agnihotry
authors.affiliation: Department of Restorative Dentistry, University of California, Los Angeles, CA, USA.
authors.forename: Karanjot S
authors.initials: KS
authors.lastname: Gill
authors.affiliation: Manipal College of Dental Sciences, Manipal, India.
authors.forename: Deepak
authors.initials: D
authors.lastname: Singhal
authors.affiliation: Bahrain Branch of the Cochrane Collaboration, Bahrain.
authors.forename: Zbys
authors.initials: Z
authors.lastname: Fedorowicz
authors.affiliation: Melaka Manipal Medical College, Manipal University, Manipal, India.
authors.forename: Sambit
authors.initials: S
authors.lastname: Dash
authors.affiliation: School of Dentistry of Ribeirão Preto, USP - University of São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Vinicius
authors.initials: V
authors.lastname: Pedrazzi
mesh_terms: D017606:Chlorine Compounds / Q000494:pharmacology*; D003069:Coffee; D003188:Composite Resins; D019551:Dental Disinfectants / Q000494:pharmacology*; D006861:Hydrogen Peroxide / Q000494:pharmacology*; D066298:In Vitro Techniques; D010087:Oxides / Q000494:pharmacology*; D013499:Surface Properties; D013662:Tea; D014073:Tooth Bleaching / Q000379:methods*; D014920:Wine
chemical_list: D017606:Chlorine Compounds; D003069:Coffee; D003188:Composite Resins; D019551:Dental Disinfectants; D010087:Oxides; D013662:Tea; C533204:filtek Z350; C025109:chlorine dioxide; D006861:Hydrogen Peroxide