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I had root canal be for three years back and had cap on my molar jaw but from last 3 or 4 month there is a ulcer on the same gum of molar jaw, its not permanent sometime it becomes bigger sometime again smaller and I also do not feel any pain there. Please tell that is it a serious problem? Or can this harm My tooth? Suggest me what to do.

2 Doctors Answered
Looks like you have a abscess with that tooth. Kindly visit a dentist who will take a x ray and suggest an appropriate treatment. You may have to get the root canal re done if there is infection with that tooth.
It appears the rct has failed remove cap get rct redone you may require epicoectomy or extraction of the offending tooth.
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