This book on Autoimmune Diseases in Dentistry is a detailed description of Autoimmune Diseases with Oral manifestations. The book has been divided into logical sequence of chapters starting from Autoimmunity and Theories explaining Autoimmunity phenomenon then Factors determining susceptibility to Autoimmune diseases. The most important Autoimmune Diseases affecting the Oral cavity like Lichen planus, Pemphigus, Immune mediaded sub epithelial blistering diseases, Sjogren syndrome, Systemic Lupus Erythematosus, Behcet's disease, Epidermolysis bullosa, Systemic sclerosis, Rheumatoid arthritis and Wegeners granulomatosis have all been comprehensively covered in depth and an understanding of the Disease process, its manifestations and management has been discussed with appropriate references to the matter. This book will not only help Dental science students but also will be of great help to Medical science students and professionals.