Abstract
Aim: This study analyzed the effect of whitening mouth rinses on water sorption (WS), solubility (SL), color change, and surface roughness of a nanofilled composite. Whitening perceptibility and acceptability (WID) were also studied. Methods: Forty specimens of Filtek Z350XT, shade EA2 were produced and randomly distributed (n=8) to AS – artificial saliva (control); LWE – Listerine Whitening Extreme; CLW – Colgate Luminous White; LCM – Listerine Cool Mint; and CP – Colgate Plax. They were immersed in the mouth rinses 2x/day, for one minute, during 28 days. The color was assessed using an Easyshade spectrophotometer (CIE-L*a*b* system). Surface roughness (Ra-μm) was measured with three parallel measures, using an RP-200 roughness meter. The WS and SL (μg/mm-3) were analyzed based on the ISO 4049 recommendations. The data were analyzed using one- and two-way ANOVA/Tukey tests (α=0.05). Results: Surface roughness significantly increased after immersion in AS and LCM, with no significant differences between the groups either before or after immersion. The ΔE* was not significantly different between the groups. All substances produced a ΔWID higher than the 50%:50% perceptibility and acceptability thresholds. The WS and SL were not significantly affected by the mouth rinses. Conclusion: Whitening mouth rinses did not affect WS, SL, surface roughness, and color stability of a nanofilled composite, regardless of the presence of ethanol in the composition.
Highlights
Mouth rinse solutions are adjunct products for oral self-care
Aim: This study analyzed the effect of whitening mouth rinses on water sorption (WS), solubility (SL), color change, and surface roughness of a nanofilled composite
Surface roughness significantly increased after immersion in AS and LCM, with no significant differences between the groups either before or after immersion
Summary
Mouth rinse solutions are adjunct products for oral self-care. Mouth rinses have become, since the 2000s, a means of attending to the growing cosmetic demand for tooth whitening. These over-the-counter products are acquired and administered by the patient, not requiring professional prescription and supervision during application[3]. Whitening mouth rinses may present up to 2% of hydrogen peroxide[4]. Other substances, such as sodium hexametaphosphate, may help to prevent tooth surface staining[5]. Alcohol is not present in every mouth rinse but those containing it present antiseptic and preserving functions, besides dissolving active ingredients[7]
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