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Published on: July 27, 2022
Effect of Staining and Bleaching on Color stability and Surface Roughness of Three Resin Composites: An in vitro
Abha Telang1, Indiresha H Narayana1, K S Madhu1
1Department of Conservative Dentistry and Endodontics, Faculty of Dental Sciences, Ramaiah University of Applied Sciences, Bengaluru, Karnataka, India.
Aim:
This study evaluated the effect of staining and subsequent bleaching on the color stability and surface roughness of three resin composites.
Materials And Methods:
One hundred and eight customized plastic disks from a plastic mold with an outer diameter of 10 mm and thickness of 1.02 mm were fabricated. Samples were divided into three groups of 36 specimens each - Group I (Estelite® α - Supranano), Group II (Filtek™ Z250 XT - Nanohybrid), and Group III (Filtek™ P90-Silorane). Subsequently, baseline surface color and roughness values were tabulated using spectrophotometer and profilometer, respectively. The specimens were then subjected to staining with coffee and turmeric for a period of 3 h/day for 40 days and following this, bleaching of the samples was done using a bleaching agent carbamide peroxide gel 15% for 8 h/day for 14 consecutive days.
Results:
Estelite® α performed better by maintaining color stability with minimal roughness compared to Filtek™ P90 and Filtek™Z250 XT. Turmeric had a greater potential to stain composites compared to coffee in all the groups.
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