Face still a little bit swollen years later!!!!

Someone please help. My face swelled up in 2002. I believed I had an abcess in my tooth. I had to get a root canal to remove the tooth because my face became swollen. I didnt go back either for a replacement tooth or whatever. However ever since, my right side of my face has never been back to being tight again like my left side of my face. Everytime I can feel the right side of my face, I can feel a more swollen ball on my face especially when I smile. I dont know what the swollen ball is though. I wish I knew the medical term. Is it too late too fix this or will this thing be on my face forever? Someone please help me if you can. I want my skinnier right cheek back. Tweet