The purpose of this research is to study the effect of Subcrestal placement of dental implants on marginal bone loss in immediate implantation. The research sample comprised of 24 implants were immediately placed after extraction,12 implants have placed at Equicrestal level (6 in the maxilla and 6 mandible) served as control group and 12 impalnts (6 in the maxilla and 6 mandible) have placed at Subcrestal level served as test group. modified bleeding index MBI, probing pocket depth PPD and marginal bone loss MBL Implant survival, evaluated for both groups. Mbl were 0.85 mm in control group and 1.30 mm in test group after one year of dental emplacement The results of the present study showed that the success rate was 100% in both groups, there was no statistical difference between the test and control regarding, MBI, while there was statistical difference between the test and control regarding MBL, PPD. during periods of follow up .