Optical coherence tomography and biometric ultrasound for gingival phenotype and epithelial thickness assessment: A cross-sectional pilot study. - Tao N; Samulak R; Wilczyński Ł; Mularczyk M; Suwała M; Hetmańska-Kołacz J; Machoy-Rakoczy M (Advances in clinical and experimental medicine : official organ Wroclaw Medical University, 2026)