I had an appt. with my dentist for a filling on February 14, 2012. After the procedure was completed the numbness wore off except in the left side of my tongue. Also I developed a swollen area about the size of a pencil eraser in the numb area. It has been several weeks now and the swelling is still there and the numbness remains. The dentist has no clue about the swelling so he sent me to an who also had no clue about the swelling, but felt that the numbness was because a certain nerve had been damaged by the needle injecting the anasthesia. He put me on GABAPENTIN and said if the swelling doesn't go down then he may have to refer me to a nuerologist or ears nose and throat doctor. The GABAPENTIN leaves me non-functional and I just can't take it anymore. Please advise about the problem and the medication!