Once your gums start to recede, brushing with a lighter hand will only be effective if there is still adequate gum tissue left to act as a barrier from disease and bone loss. But if your gums have receded to the extent that your tooth roots are exposed, you may need a gum graft. Exposed tooth roots can cause varying degrees of tooth sensitivity or make your teeth appear longer than normal. But more importantly, exposed tooth roots can leave your teeth vulnerable to bacteria and periodontal disease.
Gum grafts may also be used to correct a high frenum attachment. The frenum is the muscle between the upper or lower front teeth; if it pulls on the gum margin, recession could result. Orthodontic therapies can also stretch the gum line and cause the gums to recede. In all cases, gum grafts are an excellent way to protect the underlying bone and prevent the gums from receding further.
Radiant Dental News - April, 2012