The Effect of Bleaching Agent on the Surface Texture of Light Curing Nanoionomer Restorative Material- An in Vitro Study Under Scanning Electron Microscope

• Main Authors: S M Sharathchandra, Sujatha I, Roopa Lakshminarayana
• Format: Article
• Language: English
• Published: Al Ameen Medical College 2010-07-01
• Series: Al Ameen Journal of Medical Sciences
• Subjects: Nano-ionomer restorative material; Mylar strip; Soflex; Carbamide peroxide
• Online Access: http://ajms.alameenmedical.org/article_Vol03-3-Jul-Sep-2010/AJMS.3.3.2010.208-218.pdf

Objective of the study: The objective of this in-vitro study is to evaluate the effect of 15% Carbamide peroxide on the surface texture of the light curing nano-ionomer restorative material, under scanning electron microscope, after bleaching at different time periods after bleaching. Methodology: 80 samples of Light-curing nano-ionomer restorative material were randomly divided into 4 groups. Each group consists of 20 samples. Out of these 20 samples, 10 were cured under Mylar Strip and 10 samples were polished with Soflex. Bleaching gel was applied on the top surface of 60 samples. Bleaching was done for duration of 8 hours per day for a period of 7days. The prepared samples were tested at different time intervals of 8 hours, 24 hours and 1 month after bleaching procedure is completed. Surface texture of each sample before and after bleaching will be seen under Scanning electron microscope at 200x and 2000x magnification. Results: Fischer’s exact test shows that there was no effect of bleaching on the surface texture of Soflex polished samples of Nano-ionomer restorative cement while the Mylar finished samples were affected by bleaching.