Why do my teeth hurt so bad after whitening?

Author: Mr. Boris Lang  |  Last update: Friday, October 24, 2025

Teeth sensitivity after whitening is not uncommon, and it usually occurs when the bleaching agents used in the whitening process penetrate the enamel and reach the tooth's nerve centre, known as the pulp.

How do I stop my teeth from hurting after whitening?

Tips to Reduce Sensitivity
  1. Don't brush after a teeth whitening procedure. Brushing beforehand if you like, but avoid brushing immediately after. ...
  2. Take a pain-reliever. ...
  3. Brush teeth gently. ...
  4. Use dental hygiene products for sensitive teeth. ...
  5. Use fluoride-containing products. ...
  6. Avoid triggers.

How long should teeth whitening hurt?

While teeth whitening is very safe and effective, it is common to experience sensitivity after your treatment. The good news is that this sensitivity is only temporary; however, it can still cause some discomfort for the first few days after your procedure.

Can teeth whitening cause nerve damage?

While teeth whitening treatments often cause temporary tooth sensitivity, in some rare cases the treatment can induce permanent nerve damage and sensitivity.

How long do the zingers last after teeth whitening?

Tooth zingers typically last for a few seconds at a time. These can occur during the whitening procedure and may last for a day or two after treatment. Within those two days, your teeth will rebuild the minerals that the hydrogen peroxide stripped and heal itself back to its normal, non-sensitive states.

How To Prevent Sensitive Teeth After Whitening

Why did I get a sharp pain in my tooth while whitening?

Your tooth probably has a sensitive spot that used to be covered by bonding agent and the whitening gel is affecting it. This is a good example of the importance of a dentist's supervision when you are whitening.

How to rehydrate teeth after whitening?

Saliva is the Best Hydration

While drinking plenty of water is always a good idea, it won't necessarily rehydrate your teeth. The best way to rehydrate your teeth is by ensuring your mouth stays moist. Your saliva contains the minerals your tooth enamel needs to resurface and restore itself after whitening.

Does ibuprofen help teeth sensitivity?

Over the counter painkillers: If your teeth are sensitive, toothaches may be alleviated with pain medication such as Ibuprofen, which will help numb the pain and reduce inflammation.

Can teeth whitening cause permanent damage?

One of the most common side effects is tooth sensitivity, which can occur during or after treatment. Overuse or misuse of teeth whitening products can also lead to enamel damage, gum irritation, and discoloration.

What does dental nerve damage feel like?

Common indicators include persistent pain, sensitivity to temperature changes, tingling or numbness in the mouth or face, and difficulty chewing or speaking.

Why do my teeth hurt so bad after whitening strips?

Teeth sensitivity happens because the tooth enamel becomes thinner and less protective after the whitening process. To reduce teeth sensitivity while using whitening strips, you must use a desensitizing toothpaste or mouthwash. You will also need to avoid acidic foods with high sugar content.

How to reduce teeth sensitivity?

Depending on your situation, your dentist might recommend:
  1. Desensitizing toothpaste and mouthwash. These products may help block the pain of sensitive teeth. ...
  2. Fluoride. Your dentist may apply fluoride to the sensitive areas of your teeth. ...
  3. Dental adhesives or sealants. ...
  4. Gum graft.

Do teeth continue to whiten after treatment?

Yes, your teeth can continue to whiten slightly after a professional whitening treatment. This is because the whitening agents, like hydrogen peroxide, can keep working for a short time after the procedure. However, the most noticeable change happens during the treatment itself.

Why do my teeth hurt so bad after bleaching?

Whitening agents are typically peroxide-based and penetrate the enamel to break down stains. This creates microscopic pores in the teeth, exposing the nerve endings, causing increased sensitivity to hot/cold.

How to strengthen enamel?

Remineralize Enamel with Fluoride-Based Toothpaste or Mouthwash. Regularly brush with toothpaste containing fluoride. One of the minerals that make up the enamel is fluoride. Brushing with fluoride toothpaste applies this mineral directly to the surfaces of the teeth to assist in mineralizing the enamel.

Are teeth permanently sensitive after whitening?

If you're wondering how to help sensitive teeth after whitening, teeth and gum sensitivity are usually temporary and stop after completing your treatment. However, it can persist if you experience overtreatment, in which case you should consult your dental professional.

Do teeth become weak after whitening?

Teeth are thought to become more sensitive after whitening because the whitener weakens the teeth slightly, exposing “dentinal microtubules” that connect the outside of the tooth to the nerves inside.

Can enamel grow back?

Does tooth enamel grow back? No, if your enamel is completely gone, you can't bring it back. But your dentist can place a dental crown over your tooth to protect it from further damage.

How many years does teeth whitening last?

Is teeth whitening permanent? Teeth whitening isn't permanent. It can last from a few months to up to 3 years – it varies from person to person. The whitening effect won't last as long if you smoke or drink red wine, tea or coffee, which can all stain your teeth.

How to stop pain after teeth whitening?

How Do You Treat Teeth Sensitivity After Whitening?
  1. Take a nonsteroidal anti-inflammatory drug (NSAID) ...
  2. Ask your dentist about potassium nitrate and sodium fluoride gel. ...
  3. Try a desensitizing toothpaste. ...
  4. Switch to a soft-bristled brush. ...
  5. Avoid cold beverages—or drink through a straw.

Can a waterpik help with tooth pain?

Adding hydrogen peroxide to the Waterpik will also help disinfect the tooth and gums that are causing you issues and thus alleviate some of the pain. Before using either of these products in your Waterpik, make sure to check the instructions for the right amount to use with the amount of water you're using.

What's the best painkiller for sensitive teeth?

Best Painkiller for Toothache
  • Ibuprofen – The Go-To Pain Reliever. ...
  • Paracetamol – The Pain Reliever for Sensitive Stomachs. ...
  • Clove Oil – The Natural Pain Reliever. ...
  • Benzocaine – The Topical Pain Reliever. ...
  • Ice Pack – The Natural Pain Reliever. ...
  • Saltwater Rinse – The Soothing Pain Reliever.

How long does teeth whitening pain last?

Sensitivity is caused by the hydrogen peroxide gel penetrating the enamel and dentin of the teeth, reaching the nerve endings in the pulp. The sensitivity usually lasts for a few days after the treatment. It can be managed with over-the-counter pain relievers and desensitizing toothpaste.

What do dehydrated teeth look like?

Dehydrated teeth appear white and chalky. You'll notice this more if you're a mouth breather or have a cold. It's why you may get a white spot on a tooth overnight.

How long do teeth pores stay open after whitening?

The pores slowly close over the next two to three days, but during that time, your teeth are more susceptible to staining from foods and drinks. For at least the first 48 hours, it's best to avoid darkly colored foods and drinks, including berries, coffee, tea, red wine, and tomato sauce.

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