IADR Abstract Archives
Influence of Adhesives on Color Stability of Bulk-fill Restorations
Objectives: Evaluate the influence of different adhesive systems on the colorimetric alteration of bulk fill resins
Methods: 240 composite resin discs were made with UD3 (Micerim, Itália) with were divided into 4 groups, one control, without adhesive, and 6 study groups in which were applied the adhesive systems Clearfil SE Bond 2 (Kuraray, Japan), Futurabond NR (VOCO, Germany), OptiBond XTR (Xerr, USA), Clearfil Universal Bond (Kuraray, Japan), One Coat 7 Universal (Colténe, Switzerland) and Futurabond U (Voco, Germany). Subsequently, 480 discs of each bulk fill resin were made with Fill-Up (Cóltene, Switzerland) and Xtra-Fill (VOCO, Germany). The composite resin discs were adhered with the bulk fill resin discs with the different adhesive systems. A colorimetric evaluation was made using a spectrophotometer (VITA Easyshade® Compact, Vita Zahnfabrik, Germany). The study groups were then placed in dye solution (coffee+coca-cola) for a month and made initial measurements, day 15 and day 30. Data analysis was made using the statistical analysis program SPSS® v.25.0 (Statistical Package for the Social Sciences, IBM, EUA)
Results: After both periods (15 and 30 days) the resins presented a decrease of ΔL* and an increase of Δb*. In a global color variation, it was observed that the Fill-Up presents no significant variation of results than the Xtra-Fill (p=0,07). In general, all the self-etch adhesives show a smaller variation against the universal group. Statistically significant differences were observed after 30 days between all adhesives except Optibond XTR and Futurabond NR, and between the self-etch adhesives. The adhesive with lower ΔE was Clearfil SE Bond 2. However, the one with the lowest variation of results was the Futurabond NR
Conclusions: When using translucent resins such bulk fill resins, it is necessary to take into consideration the adhesive system used given the colorimetric change that appears to occur in the restoration
Methods: 240 composite resin discs were made with UD3 (Micerim, Itália) with were divided into 4 groups, one control, without adhesive, and 6 study groups in which were applied the adhesive systems Clearfil SE Bond 2 (Kuraray, Japan), Futurabond NR (VOCO, Germany), OptiBond XTR (Xerr, USA), Clearfil Universal Bond (Kuraray, Japan), One Coat 7 Universal (Colténe, Switzerland) and Futurabond U (Voco, Germany). Subsequently, 480 discs of each bulk fill resin were made with Fill-Up (Cóltene, Switzerland) and Xtra-Fill (VOCO, Germany). The composite resin discs were adhered with the bulk fill resin discs with the different adhesive systems. A colorimetric evaluation was made using a spectrophotometer (VITA Easyshade® Compact, Vita Zahnfabrik, Germany). The study groups were then placed in dye solution (coffee+coca-cola) for a month and made initial measurements, day 15 and day 30. Data analysis was made using the statistical analysis program SPSS® v.25.0 (Statistical Package for the Social Sciences, IBM, EUA)
Results: After both periods (15 and 30 days) the resins presented a decrease of ΔL* and an increase of Δb*. In a global color variation, it was observed that the Fill-Up presents no significant variation of results than the Xtra-Fill (p=0,07). In general, all the self-etch adhesives show a smaller variation against the universal group. Statistically significant differences were observed after 30 days between all adhesives except Optibond XTR and Futurabond NR, and between the self-etch adhesives. The adhesive with lower ΔE was Clearfil SE Bond 2. However, the one with the lowest variation of results was the Futurabond NR
Conclusions: When using translucent resins such bulk fill resins, it is necessary to take into consideration the adhesive system used given the colorimetric change that appears to occur in the restoration