How long do I leave a tea bag on an abscessed tooth to make it go away. A:You can leave a tea bag on an abscessed tooth for up to an hour to numb the pain. ChaCha on! [ Source: http://www.chacha.com/question/how-long-do-i-leave-a-tea-bag-on-an-abscessed-tooth-to-make-it-go-away ] More Answers to How long do I leave a tea bag on an abscessed tooth to make it go away. Health related question in topics Making Tea Bags .We found some answers as below for this question How long do I leave a tea bag on an abscessed tooth to make it go away,you can compare them. A:You can leave a tea bag on an abscessed tooth for up to an hour to numb the pain.