Inclusion Criteria  Patients who have at least one site of natural dentition or dental implants that need to be treated by free palatal graft surgery for indications including progressive recession, planned prosthodontics, presence of a mucogingival deformity, or a lack of keratinized gingiva. Patients who have at least 4 mm thickness of palatal mucosa (at donor site)  Exclusion Criteria:  History of smoking. Patients who have any known disease that interfere with periodontal surgery. Patients who have any dermal or autoimmune diseases. Patients who have any previous adverse reactions to the products (or similar products) used in this study. Pregnant and lactating women. Patients who have a palatal infection.