Hello!
One month ago my dentist treated my lower right first premolar, filled the root canals and then closed the tooth with a white temporary filling. Just 2 days later I went back because the tooth was hurting badly; the dentist removed the filling and then went into both canals again with a file. In both I had the feeling as if he had pierced through them. After that everything was fine for 25 days. Today I went back because of pain I had last weekend; he repeated the procedure and said that it had become infected with pus. About an hour later a thick red discharge came out of these roots (about 10 drops in total), as if it were thick blood. I would like to know whether this is dangerous and whether it was thick dark-red blood or whether there was also some pus in it. And why do the tooth roots become purulent when the tooth is "open"?
Thank you and kind regards!