Whitening toothpastes effect on nanoparticle resin composite roughness after a brushing challenge: An in vitro study

Abstract

Background Nowadays, the use of whitening toothpastes is a common habit, especially among young adults, due to aesthetic appeal. On the other hand, little is known regarding the effects of brushing with those newly dentifrices on wear properties of resin composites. Material and Methods Thirty specimens of nanoparticle composite resin were fabricated and stored in distilled water for 24 h at 370C. After this, the roughness analysis was performed and submitted to the simulated brushing technique using three types of toothpastes: conventional (GI), and two with whitening effect (GII and GIII) for a period of 15 days, with 2 brushing sessions per day for 2 minutes each. The final surface roughness was analyzed after completing all the brushing cycles and stereoscopic images were taken for each group. The data was analyzed by one-way ANOVA and Tukey-test post hoc for intergroup comparison and the T-test for dependent samples as well (α = 0.05). Results However showing an increase of roughness for all groups after the brushing cycles ( p = 0.01), no statistically significant differences among the groups after simulated brushing was verified ( p = 0.17). Yet, just some cracks of the stereoscopic images were shown, demonstrating no distinct visual effects among the studied groups. Conclusions After simulated brushing with the whitening toothpastes, similar degree of roughness was verified on the composite resin tested. Key words: Composite resin, toothpastes, whitening.

Efficiency of activated charcoal powder in stain removal and effect on surface roughness compared to whitening toothpaste in resin composite: In vitro study

“…The results show that surface roughness was significantly higher after the use of whitening toothpaste and activated charcoal powder in comparison to the baseline measures. Similar results were reported in other studies comparing different types of whitening toothpaste ( Da Rosa et al, 2016 , Dos Santos et al, 2019 ). Another study found that there was a significant increase in surface roughness regardless of the composites’ types after brushing with different whitening dentifrices ( Da Costa et al, 2010 , Roopa, 2016 ) reported that compared to conventional toothpaste samples brushed with whiting toothpaste had a significant change in surface roughness.…”

Glass Fiber Reinforced Composite Orthodontic Retainer: In Vitro Effect of Tooth Brushing on the Surface Wear and Mechanical Properties

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“…All dental materials are subject to wear. Wear can reduce the resistance of the material, change its mechanical and aesthetic properties, and lead to bacterial adhesion [46,47]. Limitations of the present study are related to the materials used.…”

Effect of Dentifrices with Different Abrasives on the Surface Roughness of a Nano Composite Resins materials

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