This document discusses the effects of various hormones from the endocrine system on the periodontium. It begins with an introduction to periodontitis and the role of the endocrine system. It then discusses the central endocrine glands of the hypothalamus and pituitary, as well as peripheral glands including the thyroid, parathyroid, pancreas, and adrenal glands. For each gland, it summarizes the hormones secreted and their effects on the periodontium, such as accelerated bone loss from hyperthyroidism, increased tooth loss with hyperparathyroidism, increased risk of periodontitis in diabetes, and reduced immune response from glucocorticoids. Sex steroid hormones from the ovaries and test