The main symptom of dental hypersensitivity is soreness and discomfort of the teeth when stimulated by external stimuli as well as mechanical action. Dental hypersensitivity, also known as dentin hypersensitivity or sensitive dentin. Mainly due to the integrity of the enamel is damaged, dentin exposure caused by a variety of dental diseases, such as abrasion, wedge-shaped defects, fracture, caries, and periodontal atrophy to the cervical exposure of the teeth, etc. can occur in dental sensory hypersensitivity. Mainly manifested as teeth in the external stimuli, such as cold, hot, sour, sweet and friction or bite hard objects and other mechanical stimulation caused by the pain symptoms, which is characterized by the rapid onset of pain, sharp, short, especially to the mechanical stimulation of the most sensitive. If you suffer from dentin hypersensitivity, it is recommended to actively seek medical treatment.