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Resin-Based Composites: Optical Behaviour, Colour Stability and the Chameleon Effect-A Comprehensive Narrative Review
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DOI：10.17576/jsm-2026-5504-10.png)
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Abstract
En 中文
Aesthetic restorative dentistry demands materials capable of reproducing the complex optical behaviour of natural teeth. Resin-based composites (RBCs) have undergone significant evolution to meet these expectations, particularly in relation to colour stability, optical properties and the chameleon effect. This narrative review synthesises the conceptual foundations and recent evidence regarding optical phenomena inRBCs, including translucency, refractive index matching, fluorescence, opalescence, and metamerism. Special consideration is given to the chameleon effect and colour adjustment potential (CAP), both of which contribute to successful visual integration between restorations and natural tooth structure. The emergence of universal-shade and structural-colour composites such as those employing spherical nano-fillers to generate colour through optical resonance, marks a significant innovation in restorative dentistry. Although these materials simplify shade selection and improve workflow efficiency, their performance remains substrate-dependent and may not reliably match high-chroma or complex aesthetic cases. This review integrates current findings, highlights material-driven optical mechanisms and proposes directions for future research to optimise aesthetic outcomes in restorative practice.
Keywords:
Chameleon effect
colour adjustment potential
colour stability
optical properties
resin-based composites
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113
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2.9K
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