Telang A, Narayana IH, Madhu KS, Kalasaiah D, Ramesh P, Nagaraja S. Effect of Staining and Bleaching on Color stability and Surface Roughness of Three Resin Composites: An
in vitro study.
Contemp Clin Dent 2018;
9:452-456. [PMID:
30166843 PMCID:
PMC6104354 DOI:
10.4103/ccd.ccd_297_18]
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Abstract
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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