ArticleClinical oral investigations2025
The effect of thermal aging on the color matching of Class III and Class V restorations with universal resin composites in various-shade human teeth: an instrumental and visual evaluation.
Article in Clinical oral investigations, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Effect of thermal aging on the radiopacity of universal composite resins at two thickness levels.Clinical oral investigations · 2026Article
- A Multidimensional Analysis of Shade Selection Difficulty for Indirect Restorations Among Dental Students and Professionals.Dentistry journal · 2026Review
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Authors and funding
2 authors.
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Abstract
objectivesThis in vitro study aimed to assess the color matching of two single-shade and one group-shade universal composite resins for Class III and Class V restorations in extracted human teeth of different shades and evaluate the impact of thermal aging on these restorations using both instrumental and visual methods. MATERIALS AND
methodsForty-five extracted human central incisors in a range of Vita Classical shades (A1, A2 and A3) were used. Three composite resins (Zenchroma (ZC), Charisma Diamond One (CDO), and Neo Spectra ST (NEO)) were tested. Each tooth received both Class III and Class V restorations (2 mm depth and 4 mm diameter) with the same composite resin. Color measurements were made immediately after restoration, 24 h, and after thermal aging using an intraoral spectrophotometer. Color differences (ΔE
resultsNEO showed statistically significantly lower ΔE₀₀ values (2.45 ± 1.29) compared to the other composite resins (p < 0.001). Class III restorations (3.41 ± 1.48) exhibited lower ΔE₀₀ values than Class V restorations (4.56 ± 2.23, p < 0.001). ΔE₀₀ values decreased after aging (p = 0.007).
conclusionClass III restorations demonstrated better color matching than Class V restorations in both visual and instrumental evaluations. The group-shade composite resin showed better color matching compared to the single-shade composite resins. Although visual matching improved over time, some instrumentally measured color differences remained above the clinically acceptable threshold (ΔE₀₀>1.8). CLINICAL RELEVANCE: Clinicians should consider both composite type and cavity configuration when selecting materials for aesthetic restorations.
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