American Dental Association
The world's oldest and largest organization for dentists.
American Academy of Periodontology
The Academy's purpose is to advance the periodontal and general health of the public and promote excellence in the practice of periodontics. Periodontics is one of nine dental specialties recognized by the American Dental Association.
Lichen Planus is a chronic disorder affecting skin, mouth or genitals, inflicting an estimated 1.2 % of the world population.