I took ortho treatment in 2004-2006. Tooth biting order looks perfect. But the upper tooth gum line portion has slightly become uneven resulting in distorted look for my mouth line. Then in 2010 i took gum grafing surgery to make gum line even by growing the gum at required place. It worked well. But one year later, gum line got uneven at another place again. Now I've diabetics. Can i still go for gum graft surgery? Is there any better option?