Potentially malignant mucosal disease
Leukoplakia
- Homogenous leukoplakia
- Non-homogenous leukoplakia- Verrucous leukoplakia
- Nodular leukoplakia
- Erythroleukoplakia
 
Oral lichen planus
- Reticular oral lichen planus
- Erythematous oral lichen planus
- Ulcerative oral lichen planus
- Plaque-like oral lichen planus