RT Journal Article T1 Use of the fractal dimension to differentiate epithelium and connective tissue in oral leukoplakias A1 Guerrero Sánchez, Yolanda A1 Gómez García, Francisco A1 Chamorro Petronacci, Cintia Micaela A1 Suárez Peñaranda, José Manuel A1 Pérez-Sayáns García, Mario K1 Oral leukoplakia K1 Oral cancer K1 Fractal dimension AB Background: Oral leukoplakia (OL) is considered one of the most common potentially malignant oral disorders (OPMD), with a verified increased risk of developing oral cancer. The identification of the dysplasia grade (low–high) is the only consolidated factor used to evaluate this risk. The objective of this study was to verify the role of the fractal dimension (FD) in assessing this dysplasia. Methods: To begin, 29 OL and 10 normal oral mucosa (NOM) biopsies were retrieved for FD analysis of the epithelial (dime) and the connective (dimc) tissue. Results: In the OL group, the median value of dime is higher (1.67, IQR = 0.12) than for the NOM group (1.56, IQR = 0.08), with statistically significant differences (Wilcoxon test, p = 0.0031). There were no differences in relation to dimc. Significant differences were observed between the non-dysplasia vs. high-grade (p = 0.0156) and low-grade vs. high-grade (p = 0.0049) groups. No significant differences were identified in relation to dimc for the different degrees of dysplasia. For a cut-off point of 1.44 of dime, a specificity of 96.6% was obtained, a sensitivity of 100%, and an AUC = 0.819 (p = 0.003). Conclusions: FD at the level of the epithelium may be used as a diagnostic tool in OL PB MDPI SN 2072-6694 YR 2022 FD 2022 LK http://hdl.handle.net/10347/30151 UL http://hdl.handle.net/10347/30151 LA eng NO Cancers 2022, 14(11), 2697; https://doi.org/10.3390/cancers14112697 NO This research was funded by Santiago de Compostela University DS Minerva RD 3 may 2026