Inclusion Criteria:  systemically and periodontally healthy, non-smokers presence of Miller Class I and II gingival recession with ≥ 2 mm gingival recession depth , probing depth <3 mm and gingival thickness (GT) ≥ 1 mm on both sides of the maxillary arch width of keratinized gingiva ≥ 2mm presence of identifiable cemento-enamel junction full-mouth plaque index (PI) < 20 % and gingival index (GI) scores =1, presence of tooth vitality and absence of caries, restorations and furcation involvement in the treated area,  Exclusion Criteria:  - patients who had systemic problems that wound contraindicate for periodontal surgery, - usage of medications known to interfere with healing and to cause gingival enlargement - recession defects associated with demineralization, deep abrasion, previous surgery in the defects area within the past 1 year, pregnant or lactating females drug and alcohol abuse