Common Causes of Tooth Sensitivity

Tooth sensitivity is a common dental problem experienced by millions of U.S. adults at some point or another.

Tooth sensitivity is a common dental problem experienced by millions of U.S. adults at some point or another. Tooth sensitivity, or dentin hypersensitivity, can happen to anyone and results in sudden, sharp, deep but temporary pain or discomfort triggered by cold air or consumption of hot, cold, acidic, sour, or sweet food and drinks. 

The primary cause of tooth sensitivity is worn tooth enamel (outer layer protecting the teeth) or root exposure due to gum recession, which exposes dentin, the teeth’s underlying layer. It causes food or drinks at a specific temperature to penetrate the tooth’s nerves and cells, leading to sensitivity. This article covers the factors that can cause tooth sensitivity.

Improper brushing technique

Aggressive brushing, using a hard-bristled toothbrush, or using abrasive toothpaste can cause the tooth enamel to wear down or encourage gum recession, resulting in pain and tooth sensitivity. Use a soft-bristled toothbrush and follow proper brushing techniques to salvage the teeth. 

Gum diseases

Gingivitis or periodontal diseases can result in gum soreness, inflammation, or recession, which exposes the roots and increases tooth sensitivity. Regular brushing, flossing, and routine dental examination can help maintain good oral health and avoid gum diseases. 

Bruxism

Bruxism is when people grind or clench their teeth regularly at night. Excessive grinding damages tooth enamel and exposes the underlying dentin, leading to sensitivity. A dentist may recommend wearing a protective mouth guard to protect the teeth at night.

Using acidic mouthwash

Several types of mouthwash contain alcohol and other chemicals, and their prolonged use can make the teeth sensitive. Using acidic mouthwash is especially harmful to individuals with exposed dentin, as it can worsen existing sensitivity and cause further damage to the dentin layer. 

An acidic or sugary diet

Frequently consuming highly acidic or sugary food or drinks like citrus fruits, lemon, candies, cookies, pickles, cakes, carbonated sodas, coffee, tea, juices, and sports drinks can erode the tooth enamel. It increases the tooth’s vulnerability to sensitivity and discomfort. 

Using teeth whitening products frequently

Several people use teeth-whitening products to brighten their smiles. Whitening toothpaste or similar products contain harsh chemicals on the teeth and wear down the enamel. A dentist can suggest alternative whitening treatments that won’t harm the teeth. 

Excessive plaque

Excessive plaque buildup can cause the enamel to wear away, making the teeth more sensitive. Plaque contains bacteria that produce acids that can break down the tooth structure, causing pain and sensitivity. Maintaining excellent oral hygiene and avoiding foods that trigger bacterial growth can prevent this situation.

Cracked tooth

Bacteria can fill the cracks or chips in the teeth, leading to inflammation in the tooth’s pulp or, worse, infection. The person can feel intense pain or sensitivity in a tooth and need to visit a dentist for proper diagnosis and treatment. 

Recent dental treatment

It is usual for teeth to become sensitive after dental treatments like cleaning, fillings, root canal, or extraction. Usually, the sensitivity disappears within two to four weeks, but if it persists, it is best to consult a dentist. 

Safeguard that smile!

Schedule an appointment with a dentist if sensitive teeth cause too much trouble. The dentist can examine to determine the underlying cause and recommend solutions that will help reduce sensitivity.


If you need a gentle, caring dental team, please call Jennifer Fineberg’s office at (623) 362-2550. We’ll give you the very best dental care we can!

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