The Effect of Different Polishing Methods and Dentifrices on of Resin Composite.

Abstract

Background: Discoloration of resin composite restorations is a common concern in dentistry. It can be influenced by various factors, such as the composition of the composite material, surface roughness, and exposure to staining agents like tea. Polishing systems and dentifrices are commonly used to maintain the esthetic appearance of resin composite restorations and prevent or minimize discoloration. Therefore, the aim of this was to evaluate the effect of different polishing systems and dentifrices on discoloration of resin composite after immersion in tea staining solution followed by mechanical brushing. Methods: 42 Resin composite discs with 3mm thickness and 10mm diameter were prepared. Specimens were divided into three equal main groups, (n=14) according to polishing system used (Mylar strip, Sof-Lex, PoGo). The specimens were fully immersed in equal amounts of Black tea staining solution and incubated at 37ºC for 7-days. Each group was further subdivided in two subgroups according to the type of dentifrice used with mechanical brushing (N=7). Spectrophotometer was used to measure the color change after polishing, after staining and after brushing. The collected data was tabulated and statistically analyzed using two-way ANOVA. Results: Color change between groups was significantly difference after staining. The highest value was found with Sof-lex (2.95±0.18), followed by PoGo (2.75±0.17), while the lowest value was found with Mylar strip (2.41±0.15). Rapid white (5.20±0.45) had significantly higher color change than Colgate (4.83±0.44) (p=0.010). Conclusions: PoGo produced better surface quality in terms of color stability than Sof-Lex, whitening dentifrice was effective on removing Black tea surface stains than nonwhitening.