Tooth sensitivity happens when the protective enamel on teeth is damaged. Enamel protects the more delicate part of the tooth, called dentin, that lives below the gumline. Dentin has tiny tubes that connect to the tooth’s nerve centre. So when it’s exposed to hot, cold or acidic food or beverages, the result is a shocking pain.
Your dentist needs to know if your teeth are sensitive because the causes can include:
Worn tooth enamel
Depending on how bad the sensitivity is, your dentist/periodontist can suggest several ways to treat the problem.
Brushing regularly with a special desensitizing toothpaste. This can help seal the tubes of the dentin and act as a protective cover.
Using a fluoride rinse or gel may help to harden the enamel, protecting the teeth. Depending on their strength, these rinses or gels are available with or without a prescription. Talk to your dentist about whether this option is right for you — and how often you should use it.
There’s also a fluoride varnish your dentist can apply to your teeth. It’s a thick paste with a high concentration of fluoride that’s applied to sensitive teeth every two or three months.
Bonding is a more permanent fix where a layer of tooth-coloured composite resin is applied to exposed, sensitive roots. This can provide long-lasting protection from tooth sensitivity.
If tooth sensitivity is a direct result of teeth grinding, your dentist can fit you with a customized mouth guard to wear while you’re sleeping and protect your teeth from more damage.
What to look out for
You should always tell your dentist if your teeth are sensitive to hot, cold or sweet, but you should call your dentist at once if you experience any of these symptoms:
Your teeth are also sensitive to pressure.
Your tooth sensitivity doesn’t decrease after using desensitizing toothpaste for a few weeks.
The pain from tooth sensitivity lasts longer than one hour.
The gums around your sensitive teeth appear to be changing colour.
Information as per the Ontario Dental Association https://www.oda.ca/oral-health-basics/oral-conditions-diseases/tooth-sensitivity/
Braganza Periodontics - Peterborough Periodontist