Effect of one-step polishing systems and bleaching on color of resin composites after staining
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2018, Vol 17, Issue 9
Abstract
Purpose:The aims of this study were to evaluate the effects of OneGloss and PoGo one-step polishing systems and an office-bleaching agent (Ultradent Opalescence Boost PF 40%) oncolor of two nanocomposite resin restorative materials (Clearfil Majesty Esthetic and Filtek Z350 XTafter exposure to a staining solution. Methods:Forty-five cylindrical specimens (8 mm diameter, 2 mm thickness) were prepared from each resin composite according to the manufacturer's instructions. Specimens were finished using a tungsten carbide finishing bur andthen thermocycled. The specimens prepared from each material were randomly allocated to three subgroups with 15 specimens in each restorative material. All specimens were measured for color (T1) using spectrophotometer Color-Eye 7000A. All specimens were immersed in staining coffee solution for 4 days and then measured for color (T2).Each group was subjected to different surface treatment, which included OneGloss or PoGo polishing systems for 30 seconds or bleaching using Ultradent Opalescence Boost PF 40% for 40 minutes. All specimens were measured for color (T3). Results:No statistically significant color difference was observed between Clearfil Majesty Esthetic and Filtek Z350 XT at the testing phase one (T1) after finishing/thermocycling. Comparing the ΔE value of each resin composite at testing phases T2 and T3 showed significant change in color between pre- and post-staining steps as well as post-staining steps and polishing/bleaching step. Horizontal comparison between both resin composites for ΔE value between testing phases T2 and T3 showed a statistically significant change with Clearfil Majesty Esthetic having the largest color change after staining for all test subgroups. Conclusions:Filtek Z350 XT nanofilled resin is more color stable than Clearfil Majesty Esthetic nanofilled resin. PoGo one-step polishing system resulted in more color change after staining than OneGloss one-step polishing system. Color change for Filtek Z350 XT, after polishing with PoGo or bleaching with Ultradent Opalescence Boost PF 40%, removed coffee staining to less than pre-stained values.
Authors and Affiliations
Fouad Salama, Mosleh Alshamrani, Hamed Alshamrani
Keywords
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- EP ID EP395427
- DOI 10.9790/0853-1709087782.
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