Inclusion Criteria:  good general health at the time of surgery at least 3months postextraction healing period horizontally compromised maxillary anterior alveolar ridges (at least 3mm bone width and 13mm bone vertical height).  Exclusion Criteria:  vertical bone defect thick labial cortex with less cancellous bone inside obvious undercut on the labial/buccal side uncontrolled periodontal conditions history of radiotherapy in the head and neck region uncontrolled diabetes mellitus or other systematic disorders smokers pregnancy non-compliant patients allergic reaction to the used medications.