Causes Of Sensitive Teeth In Children

If your child complains of tooth pain when eating or drinking something hot, cold, sweet, or sour, they may have sensitive teeth. Sensitive teeth are a common problem that can affect children of any age.

Dental sensitivity occurs when the dentin, the layer of tissue under the enamel that protects the nerve endings of the teeth, becomes exposed. This can happen for various reasons. 

Here are some of the causes of sensitive teeth in children.


Cavities are holes in the enamel caused by bacteria that feed on sugar and produce acid. The acid dissolves the tooth material, damaging the enamel and possibly the dentin. As a result, the teeth are more sensitive to external stimuli.

New Teeth

When children lose their baby teeth and their permanent teeth erupt, they may experience some sensitivity as the new teeth adjust to the environment of the oral cavity. This is normal and usually temporary.


Sinusitis is an inflammation of the sinuses, the air-filled spaces behind the nose, cheeks, and forehead. Sinusitis can cause pressure on the upper molars, which are close to the sinuses, making them more sensitive.

Cracked or Chipped Teeth

Accidents, injuries, or biting on hard objects can cause cracks or chips in the teeth. The damage can expose the dentin and allow bacteria to enter the pulp. Since the pulp contains dental nerves, this inflammation can cause tooth sensitivity.


Bruxism is the habit of grinding or clenching the teeth, often during sleep. Bruxism, which commonly affects children, can wear down the enamel and dentin, exposing the nerve endings and causing sensitivity.

Acidic Foods and Drinks

Consuming too many acidic foods and drinks, such as citrus fruits, tomatoes, pickles, and sodas, can erode the enamel and dentin over time. This can make the teeth more prone to sensitivity.

Dental Procedures

Some dental procedures, such as fillings, can cause temporary sensitivity as the teeth adjust to the treatment. This usually goes away in a few weeks.

Improper Oral Hygiene

Brushing too hard, using a hard-bristled toothbrush, or not brushing and flossing regularly can damage the enamel and gums. This can lead to gum recession, which exposes the roots of the teeth that are not covered by enamel and are more sensitive to external stimuli.

If your child suffers from sensitive teeth, contact a pediatric dentist in your local area. They can assess your youngster's mouth and treat the underlying issues causing the discomfort.