Facing Sudden Sensitivity In Your Teeth? Here Are 7 Causes You Should Know

Tooth sensitivity is a fleeting sensation brought on by a hot or cold stimulus on exposed dentin. 

Sushmita Sharma
Written by: Sushmita SharmaUpdated at: Feb 17, 2023 18:51 IST
Facing Sudden Sensitivity In Your Teeth? Here Are 7 Causes You Should Know

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Do you feel sudden sensitivity in your teeth while consuming something hot or cold? This is due to tooth sensitivity which can affect anyone and is more common during cold weather. Tooth sensitivity is a fleeting sensation brought on by a hot or cold stimulus on exposed dentin. It is important to understand the root cause of tooth sensitivity to take necessary measures. Here are eight causes of sudden tooth sensitivity that you should not ignore.

7 Causes Of Sudden Tooth Sensitivity

Chewing Ice

The enamel of the teeth can get cracked or worn away over time if you have the habit of chewing ice. The tooth is more susceptible to tooth decay and sensitivity when the enamel deteriorates.

Tooth Whitening

White teeth can be appealing, which is why many people resort to certain measures to whiten them. When you use teeth whitening treatments, your teeth become more vulnerable and expose the microtubules and make your teeth much more sensitive to pressure, heat, and cold, among other sensations. If you wish to whiten your teeth, speak with your dentist to learn how to prevent tooth sensitivity.

Also Read: Tooth Erosion: Know Its Signs And Prevention

Brushing Too Hard

If you clean your teeth too vigorously or with a hard-bristled toothbrush, your teeth may become more sensitive. Start using a soft-bristled toothbrush and brush twice a day to promote your oral health. 


Consuming foods that are acidic or hard on your teeth can affect your teeth and cause tooth sensitivity. You should consume yoghurt, cheese, or foods that are rich in fibre, as they release saliva in your mouth that aids in getting rid of harmful chemicals present in your mouth. 

Hormonal Changes

You may experience tooth sensitivity due to hormonal changes in your body. A high level of oestrogen or progesterone may increase blood flow to your gums, which could amplify your body's response to oral germs or plaque. Moreover, you may also experience tooth sensitivity during pregnancy as your body undergo hormonal changes.

Gum Problems

You may experience tooth problems as your gums recede or if you have issues affecting your gums. Your teeth' roots become exposed due to this recession, making you more prone to gum disease and dental infections.

Tooth Decay

If you have tooth decay, you may experience tooth sensitivity when eating cold or hot drinks. Tooth sensitivity is one of the symptoms of tooth decay; therefore, you should visit your dentist to check if you need a filling or a crown.

Also Read: What Causes Tooth Decay In Kids? Know Causes And Prevention Tips from Doctor


Bruxism is a condition which causes you to grind or clench your teeth excessively. Many people also tend to grind their teeth when asleep or stressed. Teeth grinding can lead to enamel erosion and cause tooth sensitivity. It is important to visit your dentist immediately if you notice these symptoms.


You can use fluoride toothpaste instead of regular ones and floss daily to avoid tooth sensitivity. It is important to visit a dentist to find the cause of your sensitivity in teeth so that appropriate treatment can be given on time.