Tooth Sensitivity

Tooth Sensitivity: Causes, Symptoms & Fast Relief Options

Tooth sensitivity to hot or cold usually means the enamel protecting your teeth has worn down or the gum line has receded, exposing the dentin underneath. It can also signal a cavity or a cracked tooth. A dentist can help determine the cause and whether treatment is needed. 

Tooth Sensitivity

Common Causes of Tooth Sensitivity

Have sensitive teeth right now? Talk to a licensed dentist online in minutes — insurance accepted or a flat $60 fee, available 24/7. 

Worn Enamel

Brushing too hard, acidic foods and drinks, or teeth grinding can thin the enamel that protects your teeth over time.

Worn Enamel

Gum Recession

When gums pull back from the tooth, they expose the root surface, which has no enamel covering at all.

Gum Recession

Cavities

Decay eats through enamel and gets closer to the nerve, making the tooth react to temperature and sugar.

Cavities

Cracked Tooth or Filling

A hairline crack or a loose filling can let stimuli reach the nerve directly.

Cracked Tooth or Filling

Recent Teeth Whitening

Whitening products temporarily open the enamel's pores to lift stains, which can cause short-term sensitivity.

Recent Teeth Whitening

Teeth Grinding (Bruxism)

Grinding wears down enamel over time and can inflame the tissue inside the tooth.

Teeth Grinding (Bruxism)

Is Tooth Sensitivity an Emergency?

Rarely. Sensitivity is usually a "schedule a visit" symptom rather than an urgent one — unless it's paired with sharp pain or swelling.

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Tooth Sensitivity

Is My Tooth Sensitivity Normal - or a Sign of Something Serious

If your sensitivity falls into the moderate-to-severe range, it's worth getting it looked at before it worsens. A licensed dentist can evaluate your symptoms over video and tell you what's likely going on and what to do next. 

 

Level
What it feels like
What it usually means
Mild
Brief 'zing' with cold drinks or ice cream, fades in seconds
Common; often enamel wear or minor gum recession
Moderate
Noticeable discomfort with hot, cold, or sweet foods that lasts a bit longer
Could be early decay, a worn filling, or grinding-related wear
Severe
Sharp, lingering pain that continues for minutes after the trigger is gone, or pain that comes on its own
May indicate infection, a cracked tooth, or nerve involvement — needs prompt evaluation

When to See a Dentist for Tooth Sensitivity

Talk to a dentist if you notice any of the following:

  • Pain that lingers for more than a few seconds after the hot, cold, or sweet trigger is removed
  • Sensitivity in one specific tooth rather than several
  • Visible swelling, a bump on the gum, or a bad taste
  • Pain that wakes you up at night or comes on without any trigger
  • Sensitivity that hasn't improved after a few weeks of at-home care

Go to urgent or emergency care instead if you have swelling spreading toward your eye, throat, or neck, or a fever with tooth pain — these can signal an infection that needs immediate, in-person treatment.

For everything else, a virtual visit is often the fastest way to find out what's going on.

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virtual dentist visit

How a Virtual Dental Visit Works

Sudden tooth sensitivity to hot, cold, or sweets? Talk to a licensed dentist online in minutes. Get relief tips and know when it's urgent. 

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Quick Form Completion

Fill out a short intake form with your symptoms, insurance (if you have it), and preferred pharmacy — available 24/7. 
Quick Form Completion

Speak to a Dentist Online

Connect with a licensed dentist over live video to discuss your symptoms and, if helpful, show the area. 
Speak to a Dentist Online

Get Fast Relief

Get a diagnosis and next steps — including a prescription sent to your pharmacy, if appropriate, or a referral for in-person care. 
Get Fast Relief
FAQ

Get Answers Quickly

Why do my teeth hurt when I drink cold water?

Cold sensitivity typically means enamel wear or gum recession has exposed the sensitive layer beneath your tooth's surface. 

Is tooth sensitivity a sign of a cavity?

It can be. Sensitivity that's localized to one tooth and getting worse is worth having checked for decay. 

How do I stop sensitive teeth?

Desensitizing toothpaste, avoiding acidic foods, and addressing the underlying cause (like gum recession) can help — a dentist can recommend the right approach for you. 

Why are my teeth suddenly sensitive?

Sudden sensitivity is usually caused by worn enamel, gum recession, a new cavity, a cracked tooth, or recent dental work like whitening or a filling. If it started abruptly and doesn't fade, it's worth having a dentist take a look. 

Can tooth sensitivity go away on its own?

Mild sensitivity from things like whitening or a new toothbrush habit can fade on its own within a few weeks. Sensitivity caused by a cavity, crack, or gum recession usually won't resolve without treatment. 

What toothpaste is best for sensitive teeth?

Look for a toothpaste labeled "for sensitive teeth" with potassium nitrate or stannic fluoride, which help block pain signals from the tooth. It typically takes two to four weeks of regular use to notice a difference. 

Can a virtual dentist diagnose tooth sensitivity?

Yes. A licensed dentist can review your symptoms, ask about your dental history, and visually assess the area over video to identify likely causes and recommend next steps — including whether you need an in-person visit. 

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