"Exposed tooth roots are the result of gum recession. Perhaps you wish to enhance your smile by covering one or more of these roots that make your teeth appear too long. Or, maybe you're not bothered by the appearance of these areas, but the exposed tooth roots are sensitive to hot or cold foods and liquids.
Your gums may have receded for a variety of reasons, including aggressive tooth brushing or periodontal disease. You may not be in control of what caused the recession, but prior to treatment your periodontist can help you identify the factors contributing to the problem. Once these contributing factors are controlled, gum graft surgery will repair the defect and help to prevent additional recession and bone loss.
Gum grafts can be used to cover roots or develop gum tissue where absent due to excessive gingival recession. During gum graft surgery, your periodontist takes gum tissue from your palate or another donor source to cover the exposed root. This can be done for one tooth or several teeth to even your gum line and reduce sensitivity."1
1."What Is a Periodontist?"Http://www.perio.org. American Academy of Periodontology, 24 Feb. 2011. Web. 11 Apr. 2012.