BMC Oral Health. 2026 Jun 1. doi: 10.1186/s12903-026-08754-0. Online ahead of print.
ABSTRACT
OBJECTIVES: This study evaluated the color adjustment potential (CAP) and translucency adjustment potential (TAP) of monoshade and polyshade composites, and the influence of opaquer/blocker use, before and after aging in anterior Class IV restorations.
METHODS: A total of 105 acrylic teeth in A1, A2, and A3 shades (Vita Classic) were restored across seven groups based on composite type: monoshade (Omnichroma, Omnichroma with Blocker, Zenchroma) and polyshade (Estelite Sigma Quick, Estelite Sigma Quick with Opaquer, Palfique, Palfique with Opaquer) (n = 5 per group). Specimens underwent 10,000 thermal cycles and coffee staining. Color measurements were performed using a spectrophotometer, and color differences were calculated using the CIEDE2000 formula.CAP and TAP were calculated at baseline (T0) and after aging (T1). Data were analyzed statistically (α = 0.05).
RESULTS: Aging produced material-specific significant changes in CAP, while TAP was not significantly affected by aging. Opaquer/blocker use did not significantly affect CAP values, while a significant effect on TAP was observed only at baseline (T0) in the Estelite comparison. Polyshade composites generally exhibited higher CAP and TAP values than monoshade materials, although these differences were not statistically significant at all evaluation time points.
CONCLUSIONS: Polyshade composites may be preferred in anterior restorations requiring improved color and translucency matching. Clinicians should carefully consider opaquer/blocker use, as it may influence optical outcomes depending on the composite type.
CLINICAL RELEVANCE: This study provides guidance to clinics on achieving the correct color and translucency in anterior fracture cases; it also presents information on the long-term color and translucency compatibility of the composite parts used.
PMID:42219478 | DOI:10.1186/s12903-026-08754-0
