What Is The Best Treatment For Severe Premolar Tooth Pain Unrelieved By Analgesics, Antibiotics, And Gargling?

Good morning doctors I am 28 yr old female ..I am suffering from unbearable pain in my premolar teeth from last 2 nights..I have taken analgesic ,moxiclav and also take Betadine gargle but not get relief...Pain is too intense as like all nerves would get damage .Pls suggest me exact medicine