Abstract
The oral cancer represents 7% of human cancers, where the squamous cell carcinoma (SCC) is the most common type. The transition from normal mucosa to invasive carcinoma has a complex multistep and multifactorial etiology. The mucosal changes that precede the occurrence of a malignant lesion have a great interest in this context, where the oral potentially malignant lesions (PMLs) are the …