Can you break your tooth on the side only?

So I have a cavity that needs to be filled, it hurts too. It doesn't hurt to chew or drink but there's always a mild pain. Anyway the other day I saw what looks like a crack on the inside of my tooth. Is it possible it could be a crack or something else. Its like a small line aNd the tooth itself hurts
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+1 y
So went to the doctor and apparently due to faulty tooth work.. I need. Root canal:/
Can you break your tooth on the side only?
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