The ever-changing profiles of human diseases in mankind's history have not left dentistry untouched.Dentine hypersensitivity (DH) is 'an enigma, being frequently encountered yet ill understood'.It is described the condition as the "common cold of dentistry". Appreciating the fact that the term, dentin hypersensitivity, may be inaccurate and even inappropriate, alternative descriptors would be difficult to introduce. The term has been commonly used and accepted for many decades to describe a specific painful condition of teeth, which is distinct from other types of dentinal pain having differing etiologies.Dentine =Hypersensitivity is a common oral pain condition affecting the teeth of many individuals. It is reasonable to surmise that with the increasing life expectancy of the population with a functional natural dentition.