Having sensitive teeth can mean anything from getting a mild twinge to having severe discomfort that can continue for several hours. It can also be an early warning sign of more serious dental problems.

The part of the tooth we can see has a layer of enamel that protects the softer dentine underneath. If the dentine is exposed, a tooth can become sensitive. This usually happens where the tooth and the gum meet and the enamel layer is much thinner. 

Here are some causes of sensitivity:

1. Removal of enamel covering the crown of tooth

This includes enamel wear due to

a) Excessive tooth brushing

B) Improper use of dental floss/ toothpicks

c) Attrition due to occlusal abnormalities

d) Abrasion and Erosion 

Excessive acidic environment due to-

- Occupational


-Illness - Gastric regurgitation

- Acidic diet


E) Abstraction- Teeth subjected to excessive torque resulting  bruxism ( Night grinding) and parafunctional activity. This force can be disrupted crystalline structure of enamel causing hypersensitivity 

F) Denudation of root surface due to loss of cementum and periodontal disease  its due to

- Gum recession

G) Iatrogenic - Inadequate coverage by crown

Other reasons are

  • Cracked tooth 
  • Fractured restoration
  • Fractured teeth
  • Dental caries
  • Acute hyperfunction of teeth
  • Atypical facial odontalgia
  • Hypoplastic enamel

Visit specialised dentist for treatment because the understanding  reason of hypersensitivity is very important for successful treatment