Evaluation of staining and color changes of a resin infiltration system

Abstract

Objective: To analyze the staining and color changes of a resin infiltrant system used for management of white spot lesions (WSLs). Materials and Methods: WSLs were artificially created on left buccal halves of 48 extracted human teeth. These sites were then treated with resin infiltration (RI) while the right halves of the teeth remained as nonresin (NRI) areas. Six groups were formed (n ¼ 8 teeth/group) and were exposed to the following: red wine, coffee, orange juice, combined staining agents, accelerated aging, and distilled water for 1 week. The teeth were then polished with a prophy cup and polishing paste. Color properties were assessed using a spectrophotometer at baseline (T0), after each exposure (T1), and after polishing (T2). Color difference (DE*) was calculated between each time point for both halves of the teeth (RI and NRI). Data were analyzed with a two-way analysis of variance with presence of resin infiltration and staining agents as the main effects for each time point pair. Multiple comparisons were made with a Bonferroni post hoc test. The level of significance was set at P , .05. Results: The red wine and combined staining agent groups caused the greatest color change between all intervals (P , .05). Significant interactions were recorded between resin infiltration application and staining agents at all time periods (P , .05). The presence of resin infiltration as a main effect did not affect color change between T0 and T2 (P . .05). Conclusions: RI areas showed higher staining susceptibility than did NRI areas. However, prophylaxis had a strong effect on reversing the discoloration of both RI and NRI areas. (Angle Orthod. 2016;86:900-904)

Resistance of resin‐infiltrated enamel to surface changes in response to acidic challenge

“…Regarding surface roughness, our results agreed with previous studies which concluded that resin infiltration of enamel lesions can provide and maintain smoother surface. However, these results contrast those of other researches which reported that surface roughness and color stability of resin‐infiltrated enamel lesions were less than ideal and could further recede with aging in the oral environment. This disagreement may be a result of mismatching in the experimental conditions and evaluation methods.…”

Staining potential differences between an infiltrative resin and an esthetic, flowable composite

“…Another study tested Icon color change when placed on artificial white spot lesions made in extracted teeth. 30 That study found that, although significant staining occurred in lesions restored with the infiltrative resin, use of a prophylaxis treatment greatly diminished the effect. Clinical implications of the current study are great.…”

“…The clinical recommendation from that study was that, although Icon tended to stain over time, avoidance of staining foods and beverages can enhance the esthetic outcome of these restorations. Another study tested Icon color change when placed on artificial white spot lesions made in extracted teeth . That study found that, although significant staining occurred in lesions restored with the infiltrative resin, use of a prophylaxis treatment greatly diminished the effect.…”

“…Limitations of the current study include the short immersion time of the products tested. Only 7 days of continuous immersion were evaluated, a time value used in other, similar work . Approximately 24 hours of in vitro conditioning corresponds with 1 month of in vivo use, and therefore 7 days of immersion in beverages would be equivalent to approximately 7 months of in vivo use .…”

“…Only 7 days of continuous immersion were evaluated, a time value used in other, similar work. 30 Approximately 24 hours of in vitro conditioning corresponds with 1 month of in vivo use, and therefore 7 days of immersion in beverages would be equivalent to approximately 7 months of in vivo use. 36 In addition, the present study only tested a relatively narrow range of beverages for staining capacity.…”