Inclusion Criteria:  Teeth need to be extracted for periodontal reasons with a defect of labial bone (horizontal or vertical bone defect). the teeth without acute inflammation. no uncontrolled systemic disease which is not suitable for implantation. Good systemic and oral health.  Exclusion Criteria:  patients with systemic diseases or medications known to alter healing processes. Psychiatric disorders. Root canal treated teeth. patients undergoing or who had undergone radiation therapy and chemotherapy to the head and neck region during 12 months. patients with para-functional habits. alcoholics. drug abusers. heavy smokers