The complications that might be part of a gum correction surgery are of a minimal level as well as uncommon. But, on the other side, some people might experience the following complications: Bleeding gums Swollen gums Teeth feeling looser – though this should only be temporary Sensitive teeth Spaces appearing between the teeth Infection  From time to time, the graft tissue might not attach to the graft site, in a proper manner. This situation happens very rarely, but if it happens then the person might require a repeat surgery.  On the other hand, some people are not satisfied with the look of their smile after their gum correction surgery. In such situations, the periodontist or cosmetic dentist might be able to reshape the gums in order to help change the way they appear.