Investigation of the Effect of Preheating Before Polymerization on the Color and Gloss of Composites Polimerizasyon Öncesi Ön Isıtmanın Kompozitlerin Renk ve Parlaklığı Üzerindeki Etkisinin İncelenmesi

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ERSÖZ B., AYDIN N., Aybala Oktay E., ÇAL İ. K., KARAOĞLANOĞLU S.

Current Research in Dental Sciences, cilt.35, sa.4, ss.289-294, 2025 (Scopus, TRDizin)

Özet

Objective: The aim of this study was to investigate the effects of preheating on the color stability and surface gloss of composite resins before polymerization. Methods: A total of 90 samples (8 mmx 2 mm) of three composite resins with different particle sizes were prepared. Half of the samples were prepared from composite tubes at room temperature and the other half were prepared from composite tubes preheated to 60°C with the Ease-It™ heating device (n=15). After polymerization and polishing, color measurements were performed using a spectrophotometer and surface gloss was measured with a glossmeter. All samples underwent 10,000 thermal cycles, after which measurements were repeated. The Kolmogorov-Smirnov test was used to assess the normality of data distribution, and Levene's test was applied to evaulate homogeneity of variance (P<.05). Results: There was no statistically significant difference in the gloss values of preheated and unheated composite resins (P>.05). Heat treatment did not cause a statistically significant difference between the composite types (P>.05), but it caused a statistically significant difference in the mean color change values (P<.001). The average color change values of the preheated groups were significantly lower than the unheated groups (P<.05). Conclusion: Preheating composite resins prior to polymerization did not significantly affect surface gloss but significantly reduced discoloration.