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Year : 2020  |  Volume : 17  |  Issue : 3  |  Page : 90-96

Color changes induced by different staining solutions and different light curing units in dental resin composites

1 Department of Restorative Dental Sciences, College of Dentistry, Taibah University, Al Madinah Al Munawwarah, Saudi Arabia
2 Department of Operative Dentistry, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia

Correspondence Address:
Rania Z Mubarak
Department of Restorative Dental Sciences, College of Dentistry, Taibah University, Al Madinah Al Munawwarah 2904-42312
Saudi Arabia
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/tdj.tdj_56_19

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Purpose To evaluate color changes induced by three different staining solutions and three different light curing devices in two different resin composites. Materials and methods Two different resin composites (ESTELITE Σ QUICK and ESTHET.X HD) were tested in this study. Hundred discs (5 mm diameter × 2 mm thick) of each tested material were made. Ten specimens were used as control, while other 90 specimens subdivided into three subgroups (n = 30); (a) cured with halogen-light curing-unit, (b) cured with plasma-arc unit, and (c) cured with argon laser of 488 nm. Each subgroup was further subdivided into three classes (n = 10): (a) immersed in tea for 10 min three times daily for 3 months, (b) immersed in coffee for 10 min three times daily for 3 months, and (c) immersed in Arabic coffee for 10 min three times daily for 3 months. Between staining challenges, specimens were immersed in artificial saliva. Specimens were tested for quantitative color changes using Quanta Environmental Scanning Electron Microscope. Data was statistically analyzed using three-way analysis of variance and Tukey's post-hoc test (P ≤ 0.05). Results The mean color change of coffee (126.53 pixel) showed the highest value. This was followed by tea (117.96 pixel) and Arabic coffee (113.5 pixel) with no statistically significant difference between the two solutions. Meanwhile, laser showed the highest mean value (122.55 pixel) whereas; there was no statistically significant difference between QHL (117.9 pixel) and plasma arc curing (117.54 pixel). No significant difference was found between the two tested materials ESTELITE Σ QUICK and ESTHET.X HD. Conclusion The two tested composites performed similarly under the test conditions. Curing with argon laser along with the coffee as staining solution affected the color stability of the tested materials.

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