Tooth sensitivity is tooth discomfort in one or more teeth that is triggered by hot, cold, sweet or sour foods and drinks, or even by breathing cold air. Sensitive teeth occurs when the outer protective layers of enamel or cementum are removed, exposing the dentin.
sensitivity on eating cold or hot in teeth

Some causes of dentin exposure include:
   Brushing your teeth too hard. This wears away the enamel layer.
   Poor oral hygiene. This may allow tartar to build up at the gum line.
   Long-term tooth wear
   Untreated dental caries (cavities)
   An old filling with a crack or leak
   Receding gums that expose the tooth's roots
   Cracked teeth
   Enamel erosion by acidic foods
   Recent dental treatments: Tooth sensitivity will disappear in 4 to 6 weeks

Maintaining good oral health habits is the key to prevent tooth sensitivity. The treatment of teeth sensitivity depend upon the cause. There is no fix one formula or remedy to treat tooth sensitivity. To relieve from sensitivity, get check-up with dental surgeon, find the cause and get treated according to the cause.

Brush your teeth with a soft toothbrush with correct method.  To learn ideal toothbrushing method, visit our youtube channel , click

And, yes, every 6 monthly routine dental check-up is most important.

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