Abscess ?: There may be residual bacteria in the tooth or the bone. Please have your dentist take a look.
Answered 2/16/2015
3.2k views
Failed Root Canal: This is unfortunately a possibility with any tooth and any root canal. The treatment option is removing the previous root canal and repeating the process. This is often best carried out by a specialist endodontist.
Answered 4/26/2021
2.5k views
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