Teeth can become sensitive all of a sudden due to several common causes. These include:
- Tooth problems such as a cracked tooth or cavity exposing the sensitive dentin layer inside the tooth.
- Teeth whitening treatments that temporarily increase sensitivity.
- Acidic foods and drinks eroding tooth enamel.
- Brushing too hard or with a hard-bristled toothbrush causing enamel wear or gum recession.
- Chewing ice leading to cracks in teeth.
- Gum disease and receding gums exposing tooth roots without enamel protection.
- Recent dental work causing temporary sensitivity.
- Sinus issues causing pressure that leads to tooth sensitivity.
- Teeth grinding (bruxism) wearing down enamel and exposing dentin.
Sensitive teeth typically feel sharp pain triggered by hot, cold, sweet, or acidic stimuli. This sudden sensitivity often results from enamel erosion or exposure of the dentin or tooth roots that lack enamel protection. A dental exam is recommended to identify the exact cause and appropriate treatment.
