It is the branch of pharmacology which relates with the study of drugs for the treatment of dental diseases. The common drugs are antibiotics, analgesics, anti-inflammatory drugs and anti-periodontitis agents. Dental Pharmacology includes oral hygiene, obtudents, Mummifying agents and drugs used for cavity and periodontal disease. Oral hygiene deals with the care of oral mucous membrane and teeth it includes. Sialagouge includes salivary secretion. Obtudents are the agents which are used to reduce the dentine sensivity to reduce the pain of excavation. Mummifying agents are used to harden and dry the tissue of pulp and root canal to give aseptic condition to tissue.