What to Do About Sensitive Teeth: How to Relieve Pain Caused by Cold, Hot, or Sweet Foods

Sensitive teeth can ruin the enjoyment of an ice-cold drink or a hot cup of coffee. Do you know that feeling when sensitive teeth make you literally “jump out of your seat” from the cold or heat? You’re not alone. What causes this? And what helps with sensitive teeth? In this article, you’ll find out why the pain occurs, what makes it worse, how to soothe sensitive teeth at home, and when it’s time to see a dentist.

What does it mean to have sensitive teeth?

Tooth sensitivity is an unpleasant, often sharp sensation that occurs when:

• contact with a cold or hot beverage,
• eating sweet or sour foods,
• brushing your teeth or even a light touch.

In some cases, it is only a temporary condition, such as after teeth whitening or a dental cleaning ( Pontes et al., 2020). Such sensitivity usually subsides within 48 hours. In other cases, the problem may be tooth decay, an exposed root, or a leaky filling.

Sensitive Teeth: Causes 

1. Exposed dentinal tubules and tooth necks

Beneath the tooth enamel lies dentin— a tissue crisscrossed by thousands of microscopic tubules that lead to nerve endings in the dental pulp. If the enamel is damaged or the neck of the tooth is exposed, thermal and chemical stimuli can easily trigger pain (Powell, 2020). This results in teeth that are sensitive to cold, hot, or sweet foods.

2. Poor brushing technique and a hard-bristled toothbrush

• Too much pressure,
• stiff bristles,
• jerky movements (Markowitz & Pashley, 2008).

All of this can contribute to gum recession and expose the sensitive tooth neck.

3. Periodontitis and gingivitis

Chronic inflammation weakens the surrounding tissues and leads to the exposure of sensitive parts of the tooth.

4. Tooth decay, cracks, and loose fillings

A tooth that is sensitive to cold or sweet foods may be a sign of deeper tooth decay. However, loose or damaged fillings can also cause similar problems—since they allow stimuli to penetrate through tiny gaps directly to the nerve. 

And be on the lookout for microcracks in the enamel as well. These often develop as a result of teeth grinding (known as bruxism), but can also occur after minor injuries. It’s always a good idea to have the problem checked by a dentist before the pain gets worse.

5. Temporary sensitivity after teeth whitening or a dental cleaning

Thin or sensitive enamel may react to whitening or sandblasting with temporary sensitivity. This usually subsides within 48 hours.

6. A tooth with a filling is sensitive to cold

After getting a new filling, your tooth may be sensitive for a few days, especially if the filling was deep and close to the nerve. This is a normal reaction that usually goes away on its own.

7. Pregnancy

Pregnancy and hormonal changes affect the condition of the gums— they increase swelling and blood flow, leading to greater sensitivity. Consistent but gentle oral hygiene can help.

Interesting Findings from Studies: How Common Is Tooth Sensitivity, and Who Is Most at Risk?

Sensitive teeth are not uncommon—according to scientific studies, they affect 18 to 68% of the population (Bamani et al., 2022). 

They are more commonly experienced by women, smokers, people who drink a lot of sweet or acidic beverages, neglect oral hygiene, or use a toothbrush that is too hard (Blaizot et al., 2020).

Older adults, patients with periodontitis, and people with significantly worn teeth are also at increased risk (Bamani et al., 2022). 

If you recognize yourself in any of these groups, it definitely makes sense to pay a little more attention to prevention.

How can I relieve tooth sensitivity? 

Home Care Tips

• Use a soft-bristled toothbrush (soft or extra soft).
• Brush your teeth gently, using soft strokes at a 45-degree angle.
• Get a special toothpaste for sensitive teeth —one containing potassium nitrate, fluoride, or hydroxyapatite. A fluoride gel or mouthwash will then help strengthen your enamel.
• Use an alcohol-free mouthwash, ideally one containing herbs (chamomile, sage).
• Limit your intake of sweet, sour, cold, and hot foods and beverages.

Old wives' tales – be on your guard

Some advice found online can actually make things worse. What works, and what doesn't?

What can provide temporary relief:

• Chamomile or sage mouthwashes – soothe the gums.
• Cloves – have a mild analgesic effect.

Things to watch out for:

• Baking soda, lemon, or vinegar —they erode tooth enamel and make the problem worse.
• High-abrasive whitening toothpastes – not suitable for sensitive teeth.

See a specialist if:

• The hypersensitivity lasts longer than 7 days.
• The pain is getting worse, or it is sharp and stabbing.
• Only one specific tooth hurts—it might be a cavity.
• The tooth is sensitive to touch or pressure.
• Have you noticed a crack, a change in color, or a loose filling?

How do acids, sugars, and bad habits harm sensitive teeth?

Certain foods or habits significantly increase the risk of developing tooth sensitivity to sweet, cold, and hot foods and drinks.

What makes the condition worse:

• Acidic drinks and citrus fruits – increase enamel erosion.
• Sweets – promote tooth decay and irritate teeth that are sensitive to sweets.
• Abrasive or whitening toothpastes – frequent use can damage the surface of your teeth.

TIP: Wait at least 30 minutes after eating acidic foods before brushing your teeth.

Sensitivity prevention as a long-term solution

Regular dental hygiene and checkups

Professional teeth cleaning helps remove tartar and plaque, which contribute to gum inflammation and the exposure of tooth necks. Preventive checkups also allow problems to be detected early—before they become painful.

A proper oral care routine: Toothbrush, dental floss, interdental brushes, mouthwash

Every day should start with:

• brushing twice a day with a soft or extra-soft toothbrush,
• using interdental brushes or dental floss,
• Alcohol-free mouthwash—ideally containing chamomile or sage extracts.

Sensitive teeth with Invisalign? Brush even more carefully

When wearing invisible aligners , it’s important to brush your teeth even more thoroughly. The aligner fits directly against your teeth, so even a small amount of plaque can cause irritation or increased sensitivity. Don’t forget the spaces between your teeth, which are often the most at risk.

Your teeth may also feel more sensitive at first when you start wearing the new aligners. However, this is completely normal—your teeth are adjusting to their new position. These sensations usually don’t last long, and you’ll soon get used to the aligners.

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You often ask

What should I do if I have sensitive teeth?

Use toothpaste for sensitive teeth, a soft-bristled toothbrush, avoid extreme temperatures, and consider a fluoride treatment.

What causes tooth sensitivity?

The most common causes are exposed dentin, receding gums, enamel wear, or tooth decay.

How long does tooth sensitivity last?

Usually within 48 hours after whitening. Persistent pain may be a sign of a more serious problem.

What can be done about sensitive teeth—any home remedies?

Chamomile or sage may provide temporary relief, but they are no substitute for professional care.

What does it mean if I have sensitive teeth?

This means that the protective layers of the tooth have been damaged and the nerve endings are responding to stimuli.

You might be interested in these articles:

• Braces before and after: How do they transform your smile? 
• Patient experience 
• Braces at any age, for children and adults  
• Broken teeth after braces: prevention and solution
• How to relieve tooth pain when wearing braces? 

Resources used:

Bamani, M., Alalwi, R., A, R., Alotaibi, F., Hamadalkhudhayri, B., Banafea, A., Alrahemy, D., Alrebh, E., Aleissa, A., Aladi, K., Alghamdi, T., Alzahrani, M., Alzaher, K., & Harbi, A. (2022). RISK FACTORS OF SENSITIVE TEETH. *International Journal of Advanced Research*. https://doi.org/10.21474/ijar01/15873

Blaizot, A., Offner, D., Trohel, G., Bertaud, V., Bou, C., Catteau, C., Inquimbert, C., Lupi-Pégurier, L., Musset, A., Tramini, P., & Vergnes, J. (2020). Prevalence of sensitive teeth and associated factors: a multicenter, cross-sectional questionnaire survey in France. *BMC Oral Health*, 20. https://doi.org/10.1186/s12903-020-01216-1 

Markowitz, K., & Pashley, D. (2008). Discovering new treatments for sensitive teeth: the long path from biology to therapy. *Journal of Oral Rehabilitation*, 35(4), 300–15. https://doi.org/10.1111/j.1365-2842.2007.01798.x

Pontes, M., Gomes, J., Lemos, C., Leão, R., Moraes, S., Vasconcelos, B., & Pellizzer, E. (2020). Effect of Bleaching Gel Concentration on Tooth Color and Sensitivity: A Systematic Review and Meta-analysis. *Operative Dentistry*, 45(3), 265–275. https://doi.org/10.2341/17-376-L

Powell, B. (2020). Tooth sensitivity. *Journal of the American Dental Association*, 96(2), 189–190. https://doi.org/10.14219/jada.archive.1978.0061

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