Ulcer On Gums After Root Canal Please Answer Regarding Ulcer On Gum After Root Canal??

Please answer regarding ulcer on gum after root canal?? - ulcer on gums after root canal

The dentist and endo Who has the root canal seem to think it is normal .. I have read, and may indicate an infection. Does anyone know this? Is it really normal right to appear on the gum near the tooth root canals lately? All dentists and dental technicians please!