Hi, I have the same problem. On one side of my upper mouth, alot of roots are exposed which looks awful. On the other side it's not so receeded but I have large black gaps where the gums have gone. I have been having specialist treatment but so far haven't got onto how I can improve the look of my gumline, because up till now they said the main priority was to get my gums healthy. Gum grafts sound painful and serious, bonding stops you being able to clean the gumline efficiently and I'm not sure where we stand on veneers and caps. I am in dispair about it , I can't believe there is nothing to be done to improve the look .