Sensitive Teeth: Why That Sharp Twinge Happens
Cold, sweet or air triggers a short, intense pain
Healthlife Editorial Team
Medical writers
In simple terms
The common causes of dentine sensitivity, what to change today, and the treatments a dentist can offer.
What causes it
Under the enamel lies dentine, crossed by microscopic tubes leading to the nerve. When enamel wears away or the gum recedes, these tubes are exposed and temperature or sweetness reaches the nerve directly.
Main triggers
- Brushing too hard, or with a hard brush
- Acidic drinks: citrus, soda, wine, and frequent reflux
- Teeth grinding at night
- Gum recession, or the weeks after a whitening treatment
What to change today
- Soft brush, gentle circular pressure
- Toothpaste for sensitive teeth, used daily; also rub a little on the sensitive spot at night
- Wait an hour after acidic food before brushing
- Water after acidic drinks, and a straw for cold drinks
What a dentist can do
Fluoride varnish, sealing agents, a filling for exposed root surfaces, a night guard for grinding, or treating the underlying cavity or crack.
When to see a dentist
If pain lasts more than 30 seconds, wakes you, or affects a single tooth strongly, a cavity, crack or nerve problem must be ruled out.
This article explains general health information in simple language. It does not replace advice from your own doctor.
When should you see a doctor?
- Your symptoms last more than a few weeks or keep coming back.
- They get worse quickly, or stop you doing everyday things.
- You notice sudden pain, breathing trouble, fainting or bleeding — seek urgent care.
- You already take medication and want to change anything about it.
This article explains general health information. It does not replace advice from your own doctor.
Frequently asked questions
- What is Sensitive Teeth: Why That Sharp Twinge Happens?
- The common causes of dentine sensitivity, what to change today, and the treatments a dentist can offer.
- What are the main symptoms or signs of Sensitive Teeth: Why That Sharp Twinge Happens?
- Common signs vary from person to person. The article above lists the symptoms to watch for, how they progress, and when they need medical attention.
- When should you see a doctor for Sensitive Teeth: Why That Sharp Twinge Happens?
- See a doctor if symptoms last more than a few weeks, get worse quickly, stop you doing everyday things, or if you notice sudden pain, breathing trouble, fainting or bleeding.
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