Clinical Repeatability and Inter-Method Agreement of VITA Easyshade Advance 4.0 and Rayplicker Cobra for Tooth Shade Determination: An Exploratory Cross-Sectional Study - L. Portero-Ruz; M. Valor-Priego; A. Martín-Vacas; M. M. Paz-Cortés; J. Mena-Álvarez; C. Rico-Romano (Diagnostics, 2026)