Evaluating Knowledge and Practice Related to Light-Curing and Resin-Based Composites Polymerization.

PURPOSE: Delivering high-quality restorative care requires clinicians to possess a solid understanding of light-curing units (LCUs) and resin-based composite (RBC) polymerisation. Despite growing research highlighting knowledge gaps among dental professionals, a disconnect remains between evidence-based recommendations and clinical implementation. This study assessed knowledge gaps and clinical practices related to LCUs and RBC polymerisation among dental students, general dentists, specialists and consultants in Saudi Arabia. MATERIALS AND METHODS: A validated, electronic questionnaire collected data on demographics, LCU and RBC selection criteria, knowledge of polymerisation, and related clinical practices. RESULTS: Among the 291 respondents, 63.9% of participants were unaware of their LCU irradiance, and 52.6% were not aware of the emission spectrum. Related clinical practices, maintenance routines, and infection control were suboptimal, with only 7.9% performed daily irradiance checks and 38.5% lacking a defined maintenance routine. Specialists demonstrated better knowledge than students and general dentists (P 0.05), yet knowledge gaps persisted across all groups. Notably, 81% of respondents expressed interest in continuing education on LCUs. CONCLUSION: Significant deficiencies in LCU selection, photoinitiator compatibility awareness, and maintenance practices were identified across all practitioner categories. Integrating competency-based education and standardised protocols is essential to improve polymerisation quality, ensure long-term restorative success, and safeguard patient care.