One of my molar tooth hurts when I gargle warm water. It doesn't when it's cold. I haven't been taking best of care so I fear it's a cavity, but why only hot water? It doesn't do it with cold... I am curious, could it be something else?
Hi. [removed] When a tooth was sensitive to only hot things, it usually means a cavity, yes, and that it is into the nerve. For this, normally they would do a root canal. I can't say that is always the case but 9 times out of 10 when your tooth is sensitive to hot, it mean a root canal. This is not a substitute for a diagnoses, only from personal experience.
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