These are damages located on the hard surface of the teeth and will actually worsen the condition of the teeth if it is not treated right away. This is because cavities increase in size when left untreated for too long.
Brushing too hard
Brushing the teeth too hard is also a cause of sensitive teeth. The reason why it is not a good idea to harshly brush the teeth is that this gradually takes away the enamel on the teeth.
This happens when people ingest acidic drinks and food. These actually melt away the enamel on the teeth and expose everything beneath the enamel and that is where teeth sensitivity comes from.
When people clench or grind their teeth, this actually damages the enamel and wears it out. Eventually, it would lead to teeth sensitivity.
Cracked teeth and worn-out fillings
These are also causes of teeth sensitivity due to the crack on the surface of a tooth or teeth that reach down to the root and sometimes the gum line. When hot and cold temperatures come in contact with cracked teeth, that makes a person experience sharp pain.
The receding of the gums happens naturally and when it does, it exposes the roots of the teeth. Since these do not have any protective layer, it will be a cause of tooth sensitivity.