| Re: PLEASE HELP!!! What is this lump
Did you have X-ray before they did root canal?
Sometimes, if the abscess is chronic and severe, it could drill your gum and create their own canal as the line for leaking the pus. My abscess was so chronic and it create a persistent pimples in the nearby gum. If your dentist already filled your tooth without realizing that your infection already spread to the gum that could guide the pus to damage your gum. Ask your dentist to recheck your tooth and ask X-ray if you think you need.
Good luck
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