Answers are grounded in this paper and cite their sources.
Experimental study evaluates light-curing effects on conversion and color stability of flowable composites, indicating important implications for dental materials.
Objectives: This study aims to evaluate the impact of light-curing modes on the degree of conversion (DC) and color change (CIEDE2000 color difference, ΔE00) of different flowable composite resins. Methods: A total of 120 specimens (n = 10 per group) were prepared from four materials: G-aenial Universal Injectable (GUI; GC), Estelite Bulk Fill Flow (EBF; Tokuyama Dental), Tetric N-Flow Bulk Fill (TNF; Ivoclar Vivadent), and Filtek Bulk Fill Flowable (FBF; 3M ESPE). The specimens were polymerized using an LED light-curing unit under three light-curing modes: standard (1,000 mW/cm², 20 seconds), high-power (1,400 mW/cm², 3 × 4 seconds), and extra-power (3,200 mW/cm², 2 × 3 seconds). The DC was quantified using Fourier transform infrared spectroscopy. Color measurements were performed at baseline, and on the 7th and 14th days after immersion in coffee, using a spectrophotometer. The ΔE₀₀ was calculated using the CIEDE2000 formula. The data were analyzed using IBM SPSS software (α = 0.05). Results: Material type and light-curing mode significantly affected both the DC and ΔE00 (p < 0.05). All composites exhibited lower DC in the extra-power mode compared to the high-power mode. On day 14, the extra-power mode resulted in significantly greater discoloration in TNF, FBF, and EBF compared to the high-power mode (p < 0.05). Conclusions: Although curing with the extra-power mode saves time, it may result in a lower DC and an increase in ΔE00 in flowable composite resin.
No takes yet. Share an insight, caveat, or question.
Karaaslan et al. (2026) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: