Decay; exposed root: A tooth can be sensitive to cold temperature, or an ingredient in the mouthwash due to either an exposed root surface, or a cavity.
Answered 12/31/2016
5.3k views
Many possibilities: You should see a dentist to figure out the cause. It could be a developing cavity, recession, bite trauma, fracture, wear into dentin, etc. So many possibilities that it is best to have this evaluated to be sure that the cause is determined and treated appropriately before it gets worse.
Answered 7/16/2013
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