I had a cavity under the gum line of upper rear molar.  Very hard to reach.  Drilling was quick but due to gum bleeding and saliva duct, dentist and assistant took nearly an hour to fill the cavity.  After multiple attempts, dentist cauterized the gum to stop the bleeding.  Filling finally held.  Now after a week to heal, the gum does not appear to be growing back, and in fact, has a large enough gap that I can feel the root of the molar with my tongue.  Is this permanent or do I need to give it time to close around the tooth?
Hello, Well, first get an x-ray of the tooth done to check the depth of decay and whether the tooth is in a position to be saved or not. If at all the tooth can be saved then it should be treated with root canal treatment followed by a script of antibiotics and painkillers. After that at least after 15 to 20 days post root canal treatment the tooth should be properly prepared for capping and should be capped for proper coverage and strength of tooth. But, first get an x-ray done and send it to me for further guidance. Hope I have answered your query. Let me know if I can assist you further.