Hypersensitivity (Dentin)

Hypersensitivity (Dentin) is a common dental condition in which the dentin—the layer beneath the enamel—becomes exposed and transmits sensations to the nerve, producing a sudden, sharp pain in response to cold, hot, sweet, sour or touch. Exposure of dentin can occur from enamel erosion, gum recession that reveals root surfaces, cracked teeth, aggressive brushing or loss of protective restorations, and the pain is typically brief but can be uncomfortable and affect daily activities like eating and drinking.

Management usually begins with conservative measures such as desensitising toothpaste, fluoride applications and changes to brushing technique to reduce further wear; a dentist may apply topical sealants, bonding agents or other protective restorations to cover exposed dentin. When sensitivity is severe, persistent or accompanied by other signs like swelling or prolonged pain, further restorative treatment—including composite bonding, crowns or, in rare cases, root canal treatment—may be required to address underlying damage or nerve involvement.