Changes in color and translucency of porcelain‐repairing resin composites after thermocycling

Choi, Misook; Lee, Yong‐Keun; Lim, Bum-Soon; Rhee, Sang-Hoon; Yang, Hyeong‐Cheol; Lim, Young‐Jun

doi:10.1002/jbm.b.30437

Cited by 15 publications

(11 citation statements)

References 16 publications

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“…The Tetric N-Ceram (Ivoclar Vivadent) was the only evaluated composite that had TEGDMA in its composition. 40 However, our research did not reveal any statistical difference in terms of color stability when it was compared with the other composites. Tooth color is a phenomenon influenced by many factors, such as lighting, opacity, light scattering, and brightness.…”

Section: 30contrasting

confidence: 64%

Color Stability and Surface Roughness of Composites after Artificial Accelerated Aging

Pucinelli¹,

Silva²,

Mellara³

et al. 2017

J Dent Indones

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The color stability and surface uniformity are very important properties for dental aesthetics. Objective: To evaluate the color stability and surface roughness of different composites after artificial accelerated aging (AAA). Methods: Samples were made using the silorane-based Filtek P90 (3M-ESPE), nanohybrid Tetric N-Ceram (Ivoclar Vivadent), and GC Kalore (GC Company). Ceramic D. Sign (Ivoclar Vivadent) and Ketac N100 (3M-ESPE) resin-modified glass ionomer cement (RMGIC) served as controls. The values for color stability and surface roughness were recorded before and after AAA for non-C-UV (300 hours). Color stability was assessed as the difference between the coordinates obtained from the L*a*b* system. The surface roughness was analyzed with a rugosimeter. The surface value of each sample was taken as the average of these measurements. The one-way ANOVA and Tukey's post-test with α=5% was used. Results: The greatest change in color stability occurred for the RMGIC (∆E=18.7) and the least for ceramics (∆E=2.1). No significant difference was noted among the composites (p>0.05). The surface roughness before and after AAA differed significantly only for the RMGIC (p<0.05). Conclusion: The two latest generation resins (Filtek P90 and GC Kalore) showed good results in terms of color stability and surface roughness for use in aesthetic restorations.

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Section: 30contrasting

confidence: 64%

Color Stability and Surface Roughness of Composites after Artificial Accelerated Aging

Pucinelli¹,

Silva²,

Mellara³

et al. 2017

J Dent Indones

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“…With the exception of a few shades, nearly all the shades shifted to red (increased CIE a* values) and blue (decreased CIE b* values) after thermocycling ( Figures 4 and 5 ). The increased redness indicates the influence of amine-based accelerators in the resin composites; since all amines are known to form by-products during photoreaction, which tend to cause yellow to red-brown discolorations under the influence of light or heat 3 , 18 , 20 , 21 . The decreased yellowness could be partly explained by the change of camphoroquinone content in the resin composites by the increased degree of polymerization.…”

Section: Discussionmentioning

confidence: 99%

Difference in the color stability of direct and indirect resin composites

Lee¹,

Lim

et al. 2011

J. Appl. Oral Sci.

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Indirect resin composites are generally regarded to have better color stability than direct resin composites since they possess higher conversion degreeObjectiveThe present study aimed at comparing the changes in color (∆E) and color coordinates (∆L, ∆a and ∆b) of one direct (Estelite Sigma: 16 shades) and 2 indirect resin composites (BelleGlass NG: 16 shades; Sinfony: 26 shades) after thermocycling.Material and MethodsResins were packed into a mold and light cured; post-curing was performed on indirect resins. Changes in color and color coordinates of 1-mm-thick specimens were determined after 5,000 cycles of thermocycling on a spectrophotometer.Results∆E values were in the range of 0.3 to 1.2 units for direct resins, and 0.3 to 1.5 units for indirect resins, which were clinically acceptable (∆E<3.3). Based on t-test, ∆E values were not significantly different by the type of resins (p>0.05), while ∆L, ∆a and ∆b values were significantly different by the type of resins (p<0.05). For indirect resins, ∆E values were influenced by the brand, shade group and shade designation based on three-way ANOVA (p<0.05).ConclusionDirect and indirect resin composites showed similar color stability after 5,000 cycles of thermocycling; however, their changes in the color coordinates were different.

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“…As results, ΔTP values were in the range of -3.8 to 0.1, and were influenced by the brand of resin composite. Translucency changes of porcelain-repairing resin composites, compared with porcelain, were determined after TC based on 2 mm thick specimens 27. The range of ΔTP was 0.45 to 0.96 in porcelain, and from -1.31 to 1.91 in resin composites.…”

Section: Reviewmentioning

confidence: 99%

Translucency changes of direct esthetic restorative materials after curing, aging and treatment

Lee¹

2016

Restor Dent Endod

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The purpose of this article was to review the changes in translucency of direct esthetic restorative materials after curing, aging and treatment. As a criterion for the evaluation of clinical translucency changes, visual perceptibility threshold in translucency parameter difference (ΔTP) of 2 was used. Translucency changes after curing were perceivable depending on experimental methods and products (largest ΔTP in resin composites = 15.9). Translucency changes after aging were reported as either relatively stable or showed perceivable changes by aging protocols (largest ΔTP in resin composites = -3.8). Translucency changes after curing, aging and treatment were perceivable in several products and experimental methods. Therefore, shade matching of direct esthetic materials should be performed considering these instabilities of translucency in direct esthetic materials.

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Changes in color and translucency of porcelain‐repairing resin composites after thermocycling

Cited by 15 publications

References 16 publications

Color Stability and Surface Roughness of Composites after Artificial Accelerated Aging

Color Stability and Surface Roughness of Composites after Artificial Accelerated Aging

Difference in the color stability of direct and indirect resin composites

Translucency changes of direct esthetic restorative materials after curing, aging and treatment

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