Teeth with exposed roots are usually caused by gingival recession, which usually cannot be treated with medication and requires membrane gingival surgery, such as lateral transposition flap, free gingival grafting, connective tissue grafting, etc. The details are as follows. 1. Lateral transposition flap surgery: using the healthy gingiva of adjacent teeth to form a gingival mucosal flap with a tip, transferring it to the recession lesion area to cover the exposed root surface, applicable to the treatment of gingival recession of individual teeth. 2. Free gingival grafting: Use of autologous healthy keratinized gingival tissue transplanted to the affected area to widen the attached gingiva, suitable for individual teeth with lip-side gingival recession resulting in a narrow attached gingiva or almost no attached gingiva. 3. Connective Tissue Grafting: Connective tissue from the palate is transplanted to the underside of the upturned semi-thickness flap in the implanted area to treat wide and deep gingival recession on a single tooth or multiple teeth. If gum recession is severe, or accompanied by other symptoms, it is recommended to go to the hospital in time to receive early formal treatment.