Color Change of Different Dual-Cure Resin Cements After Thermocycling

Abstract

The purpose of this study is to evaluate the effect of thermocycling on the color change of the amine-free dual-cure resin cements. IPS e.max CAD blocs were cut into specimens of 1 mm thickness (N=28) and cemented with one of the 4 different amine-free dual-cure resin cements (NX3 Nexus [NX], Kerr Dental; Variolink Esthetic DC [VE], Ivoclar Vivadent; Panavia V5 [PV], Kuraray Dental; G-CEM Linkforce [GC], GC Corporation) (n=7). A spectrophotometer was used for color measurements. Specimens were subjected to thermocycling (5°C and 55°C; 5000 and 10000 cycles). Normality of data distribution was tested by using the Kolmogorov-Smirnov test. Statistical analysis was performed using a two-way analysis of variance (ANOVA) and Tukey’s multiple comparison tests at a significance level of p<0.05. ∆E values were significantly influenced by the resin cements and the cycle periods (p<0.05). There were no significant differences between NX and VE groups after 5000 thermocycling, however after 10000 thermocycling VE group showed higher ∆E1 values than NX group (p>0.05). There were no statistically significant differences between the ∆E0 and ∆E1 values of the GC group, however the other groups were affected after 10000 thermocycling (p>0.05). Amine-free resin cements used for cementation showed color change after thermocycling except GC group. All resin cements were showed clinically acceptable color change after thermocycling (∆E < 3.5).

Resin cement selection for different types of fixed partial coverage restorations: A narrative systematic review

“…Time‐dependent discoloration attributed to tertiary amine content in dual‐cure cements, (Kilinc et al, 2011 ; Rosenstiel et al, 1998 ) however, calls for the application of amine‐free versions. Variolink Esthetic DC (Ivoclar Vivadent), Panavia V5 (Kuraray Noritake Dental), NX3 Nexus (Kerr Dental), and G‐CEM Linkforce (GC Corporation) are among amine‐free dual cure resin cements introduced for use in esthetic veneers when light cure cement could not be applied (Atay et al, 2019 ).…”

The Effect of Different Surface Treatments on the Color Stabilities of Lithium Disilicate Material

“…However, the color of all specimens changed after aging, even though the values were under the clinically unacceptable limit (ΔE < 3.7) ( 29) in the current study. This result may be due to the Bis-GMA content of the amine-free, dual-cure, resin cement ( 8,9 ). In addition, the intrinsic discoloration may be affected by the thickness of the ceramic and the color of the cementation area in the background ( 30 ).…”

“…In order to overcome this problem, amine-free, dual-cure, resin cement has been developed. But still, it is reported that these types of developed cement may result in discoloration by absorbing water due to their chemical contents, such as bisphenol A-glycidyl methacrylate (Bis-GMA) ( 8,9 ).…”

Effect of Color of Resin Cement on The Masking Ability of Different Translucent Ceramic Systems “An In-Vitro Study”

“…It is a solid yellow compound with an unbleachable chromophore group, so the additional amount of camphorquinone in resin formulations leads to a more unfavorable yellow color, affecting the final esthetic appearance of the cured material. 45 Atay et al, 46 revealed that the color change after the thermocycling in dual-cure resin cements was higher than the light-cure resin cements. This result was based on the oxidation of amine molecules that react with benzoyl peroxide in dual-cure systems.…”