Soft tissue grafts are often incredibly successful, sporting an average success rate of 90 - 98 percent with failure rates usually staying below two percent. This is especially true when the soft tissue graft is performed by skilled dentists like the kind found at the office of E. Carrie Ramirez, DDS. However, the success of your soft-tissue graft will also depend on how well your graft is cared for during the post-op period.