Wavelength‐Dependent Transmitted Irradiance Through Lithium Disilicate Ceramics

OBJECTIVE: ) was measured using a calibrated spectrometer system with integrating-sphere collection (MARC Light Collector, BlueLight Analytics). Data were analyzed using full-factorial four-way ANOVA and Tukey test (α = 0.05). RESULTS: All factors significantly influenced irradiance (p < 0.001). Ceramic thickness exerted greatest influence (F = 8270.89), followed by light source (F = 7827.34), translucency (F = 2001.89), and shade (F = 55.02). Red light demonstrated significantly higher transmitted irradiance than blue light across all conditions. CONCLUSIONS: Wavelength significantly affected transmitted irradiance, with red light penetrating more effectively than blue light.