why are my teeth sensitive to cold
dentalhealth
That zing from ice water usually starts with exposed dentin. Here's what causes it and what can help.
That sharp zing from a sip of ice water is common, and it usually comes down to exposed dentin, the layer under your enamel. A sensitive tooth doesn't automatically mean you need a root canal. The first step is finding the cause, then choosing the simplest fix.
Why cold makes a tooth zing
Dentin is full of microscopic channels called tubules, filled with fluid. When gums recede, the dentin on the root has nothing covering it. Cold makes that fluid move, and the nerve feels the movement as a short, sharp pain, even with no cavity at all.
Common things that expose dentin:
- Gum recession
- Enamel wear from acidic food and drink
- Brushing too hard
- Grinding or a crack
- Whitening or recent dental work
What can help
At home, use a desensitizing toothpaste every day, not just when it hurts, and brush gently with a soft brush. Our tooth sensitivity guide covers more everyday tips.
At the dental office, care often starts with an exam, then may include desensitizing products, a tooth-coloured filling or bonding, or laser desensitizing for severe cases.
When to get it checked
If the pain lingers after the cold is gone, it could be decay, a cracked tooth or an inflamed nerve, and each needs different care.
If your teeth are sensitive, let's find the cause together. Morgan Heights Dental Centre is a family dentist serving South Surrey and White Rock.