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

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.

A validated, electronic questionnaire collected data on demographics, LCU and RBC selection criteria, knowledge of polymerisation, and related clinical practices.

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.

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.