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Abstract
Dynamic light scattering (DLS) characterizes dynamic processes by analyzing correlations in scattered light. This work develops and applies multi-pixel DLS techniques for monitoring rapid changes in dental composite polymerization, which occur too quickly for traditional quasi-elastic light scattering (QLS). Using CCD-based methods—Sequential Speckle Correlation (SSC) and Laser Speckle Contrast Analysis (LSCA)—we achieved millisecond temporal resolution and spatial mapping of reaction dynamics. Results align with polymerization theory and literature, demonstrating that these advanced DLS methods enable real-time analysis of fast, highly scattering systems, with potential applications beyond dentistry.