Yesterday I had to have two upper rear teeth filled. The dentist said she had to drill close to the nerve on one of them and therefore it might need root canal treatment if an abcess appears because of damage to the nerve. I wasn't sure if she was warning me just in case or if their is a high chance of an abcess forming (I know I should have asked more questions but I'd just spent 50 minutes in the chair and was a bit dazed). Has anyone had the same thing and can you tell me what the outcome was - and is root canal treatment as awful as it sounds. I'm also 31 weeks pregnant so don't want any of this to happen in the next few weeks. Would appreciate any info.