Why sensitivity occurs in teeth- Common Causes and Treatment

Tooth sensitivity or dentin hypersensitivity is a common dental problem with several causes. It is a sudden, sharp, transient pain that occurs mainly when the teeth are exposed to hot or cold food. If you are wondering why sensitivity occurs in teeth, then hold on as we answer this common query.

In the information provided below, we will briefly discuss why sensitivity occurs in teeth and the common treatment options available – brought to you by Oris Smiles Dental Clinic Ahmedabad.

Why sensitivity occurs in teeth and common signs of teeth sensitivity

Intense pain 

Spontaneous in nature

Pain on biting

Chewing pain

Pain can be specific or generalised

Pain on exposure to cold air

Causes of tooth sensitivity

Tooth decay

The bacteria responsible for tooth decay produce an acid that destroys teeth. The acid wears off the tooth layers, causing exposure of inner layers, leading to sensitivity and pain. 

Enamel erosion

Enamel is the first and the hardest layer of the tooth. The faulty brushing technique, like horizontal scrubbing, leads to wearing off the enamel. Wearing off the enamel exposes inner layers, leading to tooth sensitivity. 


Teeth grinding or clenching leads to wearing off the enamel. Clenching mainly occurs due to stress and tension. It has a negative impact on the jaw joint and the teeth. 

Gum recession

Receding gums is a sign of advanced gum disease. Gum recession leads to exposure of the root surface leads to tooth sensitivity, and increases the susceptibility to root caries. Faulty brushing or using a hard toothbrush is also a major cause of gum recession. 


Consumption of too many acidic food items leads to wearing the enamel layer. This diet-induced wearing-off is called enamel erosion and is a common cause of tooth sensitivity. 

Common treatment options

Many treatment options are available for teeth sensitivity, and the best option is selected based on your diagnosis. It is in your best interest to get your complete dental examination done to know the exact cause, which will help our team to formulate a customized treatment plan. 


Desensitising paste application under the supervision of our experts at Oris Smiles Dental Clinic Ahmedabad is more effective than the home application of desensitising toothpaste. 


Dental bonding is the application of tooth colored resin material on the exposed tooth surface. It is hardened using a special blue light and is an effective method of managing tooth sensitivity.


Fluoride varnishes, and sealers block the dentinal tubules responsible for the impulse of sensitivity. It is one of the most effective ways to manage dentinal hypersensitivity.


When all other methods fail, RCT or root canal treatment is the last resort for teeth sensitivity treatment. It involves the removal of the nerves and vessels of the teeth that effectively cut the pain transmission. 

How to prevent sensitivity

  • Do not use at-home teeth whitening products
  • Try using desensitising toothpaste
  • Use a nightguard if you have bruxism
  • Use a soft toothbrush in a circular motion
  • Avoid aggressive toothbrushing
  • Do not eat too many acidic food items
  • Use fluoridated toothpaste.

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