I too had an abyss tooth four 4 yr ago and took Antibiotics . Like you I did not want a root canal. I have done nothing since but I have not been to the dentist so I have no idea if the tooth is healthy. The gum has receded on this this tooth and the top of the tooth is very yellow. Any idea what has caused the top of the tooth to turn yellow? Also, I am interested in oil pulling.What does oil pulling do? Thanks