Effect of in-office bleaching agents on the color changes of stained ceromers and direct composite resins. (November 2014)

• Record Type: Journal Article
• Authors: Xing, Wenzhong; Jiang, Tao; Liang, Shanshan; Sa, Yue; Wang, Zhejun; Chen, Xiaodong; Wang, Yining
• Is Part Of: Acta odontologica Scandinavica. Volume 72:Number 8(2014)
• Page Start: 1032
• Page End: 1038
• Publication Date: 2014-11
• Subjects: Dentistry -- Periodicals; 617.6005
• DOI: 10.3109/00016357.2014.946962
• Languages: English
• ISSNs: 0001-6357

Abstract

<abstract> <title>Abstract</title> <p> <bold> <italic>Purpose.</italic> </bold> To evaluate the effect of two in-office bleaching agents on the color changes of two ceromers (Ceramage and Adoro SR) and one direct composite resin (Gradia Direct Anterior) after staining by tea and coffee. <bold><italic>Materials and methods.</italic></bold> Twenty-four disk-shaped specimens were fabricated for each resin material and randomly divided into three groups (<italic>n</italic> = 8). The specimens were immersed in tea, coffee or deionized water, respectively, for 7 days. Each group was then equally divided into two sub-groups (<italic>n</italic> = 4), which were subjected to two in-office bleaching agents (BEYOND and Opalescence Boost), respectively. The color of the specimens was measured by a spectrophotometer at baseline, after staining and after bleaching. The color differences (ΔE values) between baseline and after treatments were calculated. <bold><italic>Results.</italic></bold> Statistical analysis indicated that the staining solution had significant influence on the color change of resin composites tested (<italic>p</italic> < 0.001). The discolorations of resin composites were perceptible after immersing in tea or coffee solutions (ΔE>2.0). There was no statistically significant difference between BEYOND and Opalescence Boost in stains removal from discolored resins (<italic>p</italic> = 0.550). The color changes in ΔE value between baseline and after bleaching were less than 2.0 for all resin composite groups. <bold><italic>Conclusions.</italic></bold> Tea solution produces severe discoloration of three resin composites tested. The two in-office bleaching agents can effectively remove the stains from two ceromers and one direct composite resin tested in this study.</p> </abstract>