Inclusion Criteria:  Missing mandibular posterior teeth. Good oral hygiene (plaque index less than 10 %) Good compliance to the treatment. Participants are free from local or systemic disease Willingness and ability to commit to follow-up placement. Adequate bone height and width to accommodate implant placement and sufficient keratinzed mucosa. At least 3months after tooth extraction Sufficient interocclusal distance  Exclusion criteria  Presence of persistent and unresolved infection in the implant site Parafunctional habits. Heavy Smokers. Uncontrolled systemic disease that impedes bone healing