This document is from the Department of Oral Medicine & Radiology at Navodaya Dental College. It discusses several systemic diseases that can manifest in the jaws, including hyperparathyroidism, pseudohypoparathyroidism, acromegaly, Cushing's syndrome, osteoporosis, rickets, hypophosphatasia, renal osteodystrophy, hypophosphatemia, osteopetrosis, progressive systemic sclerosis, sickle cell anemia, and thalassemia. It was authored by Dr. Vajendra Joshi, Professor, for fourth year students.