Histological grading systems of epithelial dysplasia & squamous cell carcinoma

Oral precancer lesions or conditions are primary indication to be alert about oral health. As there are high chances of oral precancer to turn into malignant lesion. It is difficult to asses that which precancer lesion is highly malignant and which is not. There are lots of classification and grading systems about the grading of oral precancerous lesion, which shows great variabilty and inter observer bias. This review gets importance as we reviewd all grading systems for oral precancer and cancer lesions with their post and cones.