Color evaluation of white spot lesions treated with resin infiltration after water or grape juice storage

Abstract

Aim: To evaluate the color stability of bovine enamel with artificial white spot lesions treated with resin infiltration (ICON) or remineralization with fluoride using two storage methods. Methods: Sixty incisors were submitted to artificial white spot lesion induced by demineralization-remineralization (DE-RE) cycling. Initial color was evaluated with CIE-Lab to measure ΔEab. Demineralized teeth were divided according to the treatment of the white spot lesion (n = 20): 1) Remineralization with 2% neutral fluoride gel for 4min (control); 2) ICON application following manufacturer’s recommendations; and 3) ICON with decreased drying time after the application of ethanol. After 24h, color was evaluated and samples were subdivided (n = 10) according to storage: 1) distilled water for 1 month; 2) grape juice for 10min daily. After storage, color was evaluated. L*, a* and b* data were analyzed by one-way ANOVA and ∆Eab data by two-way ANOVA followed by Tukey’s HSD (α = 0.05). Results: L* was affected by juice storage, and decreased when ICON was applied with decreased drying time after the ethanol application. The same behavior occurred with a* (increase with reduced drying time), while b* was not affected. For ∆Eab significant differences were observed between groups (p = 0.0219) and storage methods (p = 0.0007). There was no interaction effect (p = 0.1118). Remineralization with fluoride presented the lowest color changes after storage in water. Conclusion: Treatment of artificial carious lesions with resin infiltration presented greater color changes than fluoride remineralization after storage in both solutions in vitro.

Colour stability of resin infiltrated white spot lesion after exposure to stain-causing drinks

“…Although exposure to artificial saliva caused a color change in resin infiltrated lesions, but it did not differ significantly among control subgroups. While exposure to red tea, Arabic coffee and black coffee induced clinically significant and noticeable alterations in color of the specimens Silva et al, 2017 , Ceci et al, 2017 , Borges et al, 2014 , Furuse et al, 2020 ).…”

“…The color change observed in the resin infiltrated specimen could be explained based on the fact that despite satisfactory polymerization and polishing, resin-based materials are vulnerable to pigmentation caused by common foods and drinks, leading to significant discoloration ( Ceci et al, 2017 , Borges et al, 2014 , Furuse et al, 2020 ). Both resin infiltrated control (range 8.83 – 9.95) and treatment (15.83 – 27.87) subgroups showed ΔE value higher than 3.3 units, in line with the other reported studies,( Ceci et al, 2017 , Borges et al, 2014 , Furuse et al, 2020 ) which explains the clinically unacceptable color change after exposure to treatment subgroup. Although exposure to artificial saliva caused a color change in resin infiltrated lesions, but it did not differ significantly among control subgroups.…”

Resin Infiltration of Non-Cavitated Enamel Lesions in Paediatric Dentistry: A Narrative Review

“…The infiltrated teeth are unable to retain the masking effects and are susceptible to staining by the colouring agents present in the diet, as proved by various in vitro studies. Significant colour changes have been reported following immersion with coffee [ 110 , 111 ], tea [ 110 ], red wine [ 112 , 113 ] and grape juice [ 114 ]. The colour changes were also more apparent in resin-infiltrated teeth as compared to teeth treated with remineralising agents [ 115 ].…”