Abstract:The main aim of this review article is to provide information about Dentin Hypersensitivity(DH). Dentin Hypersensitivity ,a common condition of the teeth, characterized by short sharp pain arising from exposed dentinal tubules in response to stimuli. The article reviews its clinical features, pathogenesis, mechanism, diagnosis, prevention and management. The diagnosis should be accurate and all the differential diagnosis should be omitted. Desensitization remains the major choice for dentin hypersensitivity. The basic principle of treatment of dentin hypersensitivity is to block the patent tubules or block pulpal nerve response.