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What is tooth sensitivity?
Tooth sensitivity can be triggered by hot or cold temperatures, sweet or sour foods and drinks, or deep cavities and fillings. Your teeth are protected by a layer of enamel that protects the exposed portions of your teeth below the gumline. If the enamel layer thins or wears down, it exposes dentin. Dentin is more porous and contains microscopic canals known as tubules which when exposed can allow fluid to flow through them and irritate the nerves within your teeth.Common Causes
Various factors can cause or increase your risk of developing sensitive teeth. Some of the most common causes include:- Acidic foods and beverages can eat away at your enamel and make your teeth more prone to erosion.
- Certain dental conditions may also increase your risk of tooth sensitivity such as overcrowding, crooked teeth, and misaligned bites.
- Over brushing with a hard bristle brush or firm hand can wear down on your enamel and expose porous surfaces that lead to your tooth’s nerves increasing sensitivity.
- Patients who grind their teeth may create small fractures in their teeth that may irritate nerves and increase sensitivity as well.
- Poor oral health habits such as not brushing properly or flossing may also cause plaque and bacteria to build up and break down your tooth’s enamel, weakening them and making them more susceptible to sensitivity.
- Receding gums can also expose areas that are normally protected by your enamel and increase nerve sensitivity in your teeth.
- Tooth decay, cavities, or deep or broken fillings that penetrate deeply close to the nerve may also cause irritation and the development of tooth sensitivity.