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Why Do My Teeth Hurt When I Have Cold or Hot Drinks? | Best Guide to Tooth Sensitivity

woman with tooth sensitivity from drinking a glass of ice water
Why does ice water often causes tooth pain or sensitivity?

Taking a sip of ice water or stepping out into a winter morning in Edmonton shouldn't result in a sharp, painful "zing" in your teeth. If it does, you’re experiencing what is called dentin hypersensitivity or tooth sensitivity. Read through our best guide to tooth sensitivity and get to the root cause of your dental pain.


Why does cold or hot sometimes cause sharp tooth pain?

Tooth sensitivity happens when the enamel, the protective outer layer of your tooth, wears down or when your gum line recedes and exposes the layer under your enamel, called dentin. Dentin is made up of thousands of microscopic tubules or channels that lead directly to the nerves in your teeth. When cold water or air reach these channels, the nerves are triggered and results in a sharp, sudden pain.


What Is Really Happening Inside Your Tooth?

cutaway of a tooth to show the tooth anatomy
What Is Really Happening Inside Your Tooth? Tooth anatomy.

Enamel is the hardest substance in your body. It acts as a shield and protects your teeth from bacteria and it cannot regenerate. Once it is gone, it is gone for life.


As your enamel shield thins out, or your gums recede, the channels in your dentin are exposed and act as a direct link to the nerves in your tooth. That "zing" or pain is your nerve’s way of saying your tooth is exposed.



Common Reasons for that "Zinging" Pain

at home tooth whitening nighttime mouth guard for teeth grinding and a worn toothbrush all things that can cause tooth sensitivity
Common Reasons for that "Zinging" Pain

According to John Hopkins Medicine, tooth sensitivity is a common dental issue affecting approximately half the population. It is often a result of daily habits rather than a major dental emergency. Some common causes include:

  • Aggressive Brushing: Brushing your teeth too hard wears down your enamel and irritates your gums. Over time, your gums pull away or recede, and expose the root.

  • Acidic Diet: Pop, energy drinks, and lemon water can soften your enamel "shield." Using a straw helps protect your teeth from acids. Interesting fact: composite fillings and dental crowns are acid resistant!

  • Nighttime Tooth Grinding: Clenching or grinding your teeth while sleeping can cause micro-cracks in your teeth or wear down your biting surfaces.

  • Whitening Products: Whitening agents can temporarily dehydrate your teeth and irritate the nerves.


How Can Your Dentist Help?

woman in a dental chair asking dentist about tooth sensitivity
Asking your dentist question about tooth pain is a great way to get to the root of your pain.

You shouldn't have to change your diet just to avoid pain. Depending on what is causing your sensitivity, we have several ways to help you at our Mill Woods clinic:

  • Desensitizing Treatments: We can apply professional-grade fluoride or sealing agents in-office that "plug" those tiny channels in your dentin.

  • Dental Bonding or Filling: If significant enamel loss or recession is present, we can cover those areas with a tooth-colored resin that acts as a new protective layer.

  • Custom Night Guards: If you're grinding your teeth, we can make a custom guard to protect your enamel while you sleep.


Best Guide to Tooth Sensitivity, FAQ’s:

  1. Can I reverse tooth sensitivity at home?

Yes, you can. The most effective way to stop the pain at home is to use a toothpaste, like Sensodyne, that blocks nerve pain. Typically, it takes about two weeks of consistent use to "calm" the nerve response. For the best results, pair your toothpaste with a soft-bristled toothbrush to prevent further wear. And remember to avoid brushing too hard. Want to learn more about taking care of your teeth at home? Check our blog post Top Ten Tips to Take Care of Your Teeth at Home!

  1. Is tooth sensitivity a sign of a cavity?

It can be. While general sensitivity often affects multiple teeth, pain that is sharp and localized to just one tooth can be a sign of a cavity, a cracked tooth, or a leaking filling. If this is the case, you need to make an appointment with us.

  1. Can I reverse enamel loss?

No, enamel loss cannot be reversed. However, there are products that can help remineralize it. Using fluoride-rich products helps harden the remaining enamel, making it more resistant to acid and temperature changes.


Ready to enjoy your favourite hot or cold treats?

man in cafe enjoying a hot cup of coffee without tooth pain
It's time to enjoy your favourite hot and cold treats again.

If that "zing" is bothering you, let’s find the root cause. Whether you need a simple switch in your home routine or a professional treatment, our team at Burnewood Dental is here to help our Mill Woods neighbors stay comfortable.

Start enjoying your favourite hot and cold treats again. Book a dental exam at Burnewood Dental Clinic!

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This post is just another example of the expertise, passion and commitment the Burnewood office has for your dental health. If you liked what you saw, call 780-440-4800 to book an appointment or, book online.

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