Explain the following in detail based on its etiology ,

/in /by

Explain the following in detail based on its etiology ,

write 5 pages for Pre-malignant lesions
A) Leukoplakia
B)palatal reverse smokers
C)Erythroplakia
 
 
write 5 pages for pre-malignant conditions
A) Oral submucous fibrosis
B) Lichen planus
C) Lupus erythematous
 
Explain the following in detail based on its etiology , clinical features, classifications , histopathological features.