IADR Abstract Archives
Color Stability and Bond Strength of Dual-cured Resin Cement
Objectives: This study evaluates the color stability and bond strength of amine-free dual-cured resin cement “Panavia V5” compared to 4 dual-cured resin cements (Multilink Automix; Ivoclar,, Variolink Esthetic DC; Ivoclar, Rely X Ultimate; 3M ESPE, G-CEM LinkForce; GC).
Methods: 1) The color stability: The discs 0.25mm thick of each resin cements were fabricated (n=3) by polymerization in the light irradiation. Baseline color values were measured with a spectrophotometer, and specimens were then placed in distilled 70°C water for 1 day, 1 week, 2 weeks, 3 weeks, and 4 weeks. After each storage time, the color measurements were taken. Color change from baseline was evaluated as ΔE* based on the formula: ΔE* = (ΔL^2+Δa^2+Δb^2)^0.5.
2) The bond strength: Shear bond strength to human dentin was measured (n=5) after storage in 37°C water for 24hours and after subsequent thermocycling (4°C-60°C, 1min. each, 3,000cycles: TC3000). The bonding procedure for each material was performed according to the manufacturer’s instruction.
Results: The results were summarized in Table 1 and 2; statistically significant differences are indicated by different letters (a, b, c, or d) (P<0.05).
Conclusions: The amine-free resin cement “Panavia V5” showed significantly less color variation with time in 70°C water than the other 4 dual-cured resin cements. In addition, “Panavia V5” showed the highest bond strengths to human dentin after 24 hours and TC3000 in comparison with the other 4 resin cement systems. This study indicates that “Panavia V5” would exhibit reliable clinical performance in esthetic dentistry superior to the other resin cements.
Methods: 1) The color stability: The discs 0.25mm thick of each resin cements were fabricated (n=3) by polymerization in the light irradiation. Baseline color values were measured with a spectrophotometer, and specimens were then placed in distilled 70°C water for 1 day, 1 week, 2 weeks, 3 weeks, and 4 weeks. After each storage time, the color measurements were taken. Color change from baseline was evaluated as ΔE* based on the formula: ΔE* = (ΔL^2+Δa^2+Δb^2)^0.5.
2) The bond strength: Shear bond strength to human dentin was measured (n=5) after storage in 37°C water for 24hours and after subsequent thermocycling (4°C-60°C, 1min. each, 3,000cycles: TC3000). The bonding procedure for each material was performed according to the manufacturer’s instruction.
Results: The results were summarized in Table 1 and 2; statistically significant differences are indicated by different letters (a, b, c, or d) (P<0.05).
Conclusions: The amine-free resin cement “Panavia V5” showed significantly less color variation with time in 70°C water than the other 4 dual-cured resin cements. In addition, “Panavia V5” showed the highest bond strengths to human dentin after 24 hours and TC3000 in comparison with the other 4 resin cement systems. This study indicates that “Panavia V5” would exhibit reliable clinical performance in esthetic dentistry superior to the other resin cements.