Key Takeaways

  • Tooth sensitivity is caused by the exposure of dentin, the layer beneath the tooth's enamel that covers the nerve.

  • The exposure can result from enamel loss due to abrasion or erosion, or from gum recession exposing the tooth's roots.

  • It is crucial to have a dental professional diagnose the cause of sensitivity, as it could indicate a more serious issue like a cavity or gum disease.

  • Professional treatments include applying fluoride varnish to strengthen enamel and dentin, or using a bonding agent to seal the dentin surface.

  • At-home care involves using a very soft-bristled toothbrush, correct brushing techniques, and using toothpaste specifically formulated for sensitivity.

Tooth Sensitivity – Overview

Tooth sensitivity is due to the exposure of dentin, the part of the tooth which covers the nerve, either through loss of the enamel layer or recession of the gums. Temperature changes and certain foods (acidic or sweet) can cause the tooth or teeth to be painful. The pain usually subsides after a short period of time.

The dentin contains many pores or tubes that run from the outside of the tooth to the nerve in the centre. When the dentin is exposed, these tubes can be stimulated by changes in temperature or certain foods.

The best way to find out why a tooth is sensitive is to have a dental professional examine you. They can look for the signs of dentin exposure and run tests to determine what the true cause of the sensitivity is. Sometimes, the sensitivity is due to a cavity or gum disease – these can be treated to address the sensitivity. Other times, the cause of the sensitivity is because the enamel has been lost through abrasion or erosion, or the gums have receded, causing the roots to be exposed.

What Can Be Done About Sensitive Teeth?

If the sensitivity is due to a cavity, a restoration can be placed. If gum disease is the cause, the dental professional can perform a thorough cleaning of the area.

However, if the cause is from dentin being exposed, then there are many professional and at home treatments that can be used to reduce the sensitivity.

  • Dental Office Procedures:

    • Fluoride varnish can be applied to exposed areas, strengthening the enamel and dentin

    • Bonding agent, the material used to stick tooth coloured restorations to teeth, can be used to seal the dentin surface and provide a barrier to the stimuli that cause sensitivity

  • At Home:

There are many treatments available, and your dental professional can help you find those that will work best, depending on your situation. Always seek a dental professional's help – do not try to diagnose this problem yourself. It may be the sign of something more serious, and only a dental professional can tell you what it really is.

ORAL HEALTH QUIZ

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ORAL HEALTH QUIZ

What's behind your smile?

Take our Oral Health assessment to get the most from your oral care routine