Lichen planus is a common mucocutaneous disease affecting 1% to 2% of the population. Lesions occur on both mucosal and cutaneous surfaces (40%), or either of any one site. Oral Lichenoid reactions are considered to be variants of Lichen Planus. They can be considered as a separate entity or an exacerbation of lichen planus when exposed to drugs or in contact with dental materials. Lichenoid Mucositis and LP exhibit similar clinical and histologic findings. The two are distinguished from each other based on 2 factors: a) association with the administration of drugs, contact with metal,...

Odontogenic cysts are common to the jaws. The 1992 World Health Organization (WHO) classification of odontogenic cysts is widely recognized and categorizes them as developmental or inflammatory in nature. Most commonly encountered cysts are radicular cysts of inflammatory origin or dentigerous cysts. Other cysts are less frequently encountered and may present diagnostic difficulties because of their varied features. These lesions generally show slow and expansive growth and are associated in some cases with marked bone destruction and recurrence. Now days, it is seen that odontogenic cysts...