I lost my back bottom molar a couple years ago due to a failed root canal, well no one informed me that bone loss could happen if I didn't get an implant. Now there's a huge dip where my molar was, it's really deep. I'm only 18, what do I do? will it get worse if I leave it be? It's only in one spot where my tooth used to be, please help, I don't know what to do.