J Korean Acad Conserv Dent.  2008 Jul;33(4):389-396. 10.5395/JKACD.2008.33.4.389.

Color stability of the resin cements with accelerated aging

• Song HJ
• Park SJ
• Hwang YC
• Oh WM
• Hwang IN

• KMID: 2176006
• DOI: http://doi.org/10.5395/JKACD.2008.33.4.389

Abstract

The purpose of this study was to evaluate the color stability of resin cements with accelerated test. Four dual curing resin cements: Panavia-F (KURARAY), Duolink (BISCO), Variolink-II (Ivoclar Vivadent), and RelyX Unicem (3M ESPE) and 1 self curing resin cement: Resiment CE (j. l. Blosser) were used in this study. In control group, Gradia Anterior (GC) composite resin and Tescera Dentin (Bisco) indirect composite were used. Ten disk shape specimens were made from each resin cement. The specimens were subjected to an accelerated aging process in a refrigerated bath circulator at 60degrees C for 15 and 30 days. Spectrophotometric analyses were made before and after 15 days and 30 days of accelerated aging time. The color characteristics (L*, a*, b*) and the color difference (DeltaE*) of the specimens before and after immersion were measured and computed. Regardless of type of the resin cements, L* value was decreased and a* value was increased, but there were no significant difference. But b* value was increased significantly (p < 0.05). Tescera inlay showed least color change (p < 0.05), but Gradia showed notable color change after 15 days. After 30 days on accelerated aging, DeltaE* value was increased (Panavia-F < Variolink-II < Resiment CE < Duolink < Unicem) (p < 0.05), but there were no significant difference among Panavia-F, Variolink-II, and Resiment CE groups. After 30 days of accelerated aging, DeltaE* value of all resin cements were greater than 3.0 and could be perceived by the human eye.

Keyword

Resin cement; Color stability; Accelerating test; Color change; CIE L*a*b*; DeltaE* value

MeSH Terms

Aging
Baths
Composite Resins
Dentin
Dentin-Bonding Agents
Eye
Humans
Immersion
Inlays
Resin Cements
Composite Resins
Dentin-Bonding Agents
Resin Cements

Figure

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  Figure 1 Change of L* Value after accelerating test.

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  Figure 2 Change of a* Value after accelerating test.

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  Figure 3 Change of b* value after accelerating test.

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  Figure 4 Total color difference (ΔE*). Bar means statistically significant difference between 15days and 30days (p < 0.05)

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