Vestibular Incision Subperiosteal Tunnel Access With Fascia Lata Allograft in The Treatment of Gingival Recession

Inclusion Criteria: * Presence of gingival recession type 1 (RT1) Cairo classification (6) * Gingival recession depth ≥ 2 mm. * Gingival thickness for the site selected should be ≥1mm. * The height of keratinized gingiva (HKG) for the site selected should be ≥2 mm (HKG is the distance between the most apical point of the gingival margin and the mucogingival junction). * Optimal compliance as evidenced by no missed treatment appointments and a positive attitude toward oral hygiene. Exclusion Criteria: * Presence of any systemic disease that could influence the outcome of the therapy. * Presence of any risk factor e.g.; smoker, pregnant and lactating patients. * Previous history of periodontal surgical treatment in quadrant selected for the study. * Restorations or caries in the area to be treated and non-vital tooth. * Teeth which are tilted or rotated. * Patients taking medications known to cause gingival enlargement.