CC BY-NC-ND 4.0 · Eur J Dent 2013; 07(01): 110-116
DOI: 10.1055/s-0039-1699004
Original Article
Dental Investigation Society

Assessment of changes in color and color parameters of light-cured composite resin after alternative polymerization methods

Emine Sirin Karaarslan
1   Department of Restorative Dentistry, Faculty of Dentistry, Gaziantep University, Gaziantep, TURKIYE
Bulbul Mehmet
2   Department of Prosthodontics, Faculty of Dentistry, Gaziantep University, Gaziantep, TURKIYE
Ertas Ertan
3   Department of Restorative Dentistry, Faculty of Dentistry, Ondokuz Mayis University, Samsun, TURKIYE
Mehmet Ata Cebe
4   Department of Restorative Dentistry, Faculty of Dentistry, M. Kemal University, Hatay, TURKIYE
Aslihan Usumez
5   Department of Prosthodontics, Faculty of Dentistry, Bezmialem Vakif University, Istanbul, TURKIYE
› Author Affiliations
Further Information

Publication History

Publication Date:
15 October 2019 (online)


Objective:To examine the amount of change in color and color parameters of a composite resin (Filtek P60) polymerized by five different polymerization methods.

Methods: A Teflon mold (6mm in diameter, 2mm in height) was used to prepare the composite resin discs (n=10). G1: Polymerization with inlay oven; G2: Polymerization with HQTH and autoclave; G3: Polymerization with LED and autoclave; G4: Polymerization with HQTH; G5: Polymerization with LED. Colorimetric values of the specimens before and after polymerization were measured using a spectrophotometer. The CIE L*a*b color system was used for the determination of color difference. Analysis of variance (ANOVA) was used to analyze the data for significant differences. Tukey’s HSD test and paired two-tailed tests were used to perform multiple comparisons (α=.05).

Results: There were no significant differences in total color change (ΔE*ab) among the polymerization groups (P>.05). However, the lowest color change (ΔE*ab) value was 3.3 in LED and autoclave; the highest color change (ΔE*ab) value was 4.6 in HQTH. For all groups, CIE L*, C*ab and a*values decreased after polymerization (P<.05). The highest Δb* and ΔC*ab values were observed in specimens polymerized in an inlay oven (P<.05).

Conclusion: Composite resin material showed color changes above the clinically accepted value in all study groups (ΔE*ab≥3.3). All specimens became darker during investigation (ΔL*< 0). Specimens polymerized with inlay oven presented the highest Δb* values which means less yellow color in specimens. (Eur J Dent 2013;7:110-116)


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