Effect of Staining and Bleaching on Color stability and Surface Roughness of Three Resin Composites: An in vitro study

Abha Telang, Indiresha H Narayana, K S Madhu, Dinesh Kalasaiah, Poornima Ramesh, Shruthi Nagaraja, Abha Telang, Indiresha H Narayana, K S Madhu, Dinesh Kalasaiah, Poornima Ramesh, Shruthi Nagaraja

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.

Keywords: Color stability; Supranano; nanohybrid; silorane; surface roughness.

Conflict of interest statement

There are no conflicts of interest.

Figures

Graph 1
Graph 1
Comparison of the means for color change (ΔE) in the composites at the different experimental stages using the two staining agents
Graph 2
Graph 2
Comparison of the mean surface roughness of the composites at the different experimental stages using the two staining agents

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Source: PubMed

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