10 Common Causes of Tooth Sensitivity

Causes of Tooth Sensitivity

Tooth sensitivity is a common dental problem characterized by sudden, sharp pain aggravated by certain substances or temperatures but is temporary. Here are some causes of tooth sensitivity and what you can do to find relief.

Common Causes of Tooth Sensitivity

1. Eroded enamel

When enamel is worn down, it exposes the dentin of the tooth. This leads to more sensitivity as your teeth lose the protection provided by the enamel. To keep your enamel from eroding, practice good oral care with daily brushing and flossing and frequent dental check-ups.

2. Tooth decay

The acids produced by bacteria in plaque can cause the breakdown of the tooth structure, resulting in pain and sensitivity. Thus, it is important to maintain routine oral care and avoid sugary foods, which promote bacterial growth.

3. Cracked teeth

Cracked teeth can become filled with bacteria and cause inflammation in the pulp of the tooth. This may lead to abscess or infection. If this is the case, you are likely to feel sensitivity in one particular tooth and an appointment with your dentist is necessary. 

4. Bruxism (teeth grinding)

Bruxism (teeth grinding)

Grinding your teeth can wear down the enamel and fracture teeth, leading to sensitivity. Address the stress causing you to grind your teeth or talk to your dentist about getting a protective mouth guard or splint. In severe cases, you may need Botox for jaw pain relief, as well as restorative work to fix damaged teeth.

5. Gum recession  

Gum recession is one of the most common causes of tooth sensitivity. It’s when your gums pull away from your teeth, exposing the tooth root. The tooth root does not have enamel to protect it, thus, it is much more sensitive than the rest of the tooth. Gum recession often happens with age, but also can be a sign of gum disease as well as a result of brushing too hard or using a hard-bristled toothbrush.

6. Brushing too hard

Brushing too hard or using a hard-bristled toothbrush can wear down the enamel or encourage gum recession. Adjust your technique and get a soft-bristled toothbrush.

7. Using a whitening toothpaste

Whitening toothpastes contain abrasives that can be harsh on your teeth and cause sensitivity. To relieve sensitivity, use a desensitizing toothpaste or see your dentist get a desensitizing sealant application. 

8. Long-term use of mouthwash

Like whitening toothpaste, some over-the-counter mouthwash contains harsh chemicals and alcohol that can make your teeth more sensitive, especially if you already have eroded enamel. Switch to a fluoride mouthwash or skip it altogether. Mouthwash is not necessary if you maintain good oral care by brushing and flossing every day.

9. Acidic food

Avoid acidic food, like soda, sour candy, and alcohol, which can erode enamel, increasing the likelihood of sensitivity. Instead, opt for fruit, vegetables, cheese, yogurt, and water, which support a healthy mouth. If you do end up consuming acidic food, don’t brush your teeth right after, when your enamel is weakened by the acid, but wait at least an hour.

10. Sensitivity after dental treatment

Teeth might be sensitive after a professional teeth whitening treatment, professional cleaning, and some tooth restoration procedures. These symptoms should disappear after 2-4 weeks. If they persist, contact your dentist as it can be a sign of infection.

Proper diagnosis of the cause of the sensitivity is important in order to treat sensitivity effectively. See a dentist right away, especially if sensitivity persists.

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