الفهرس 
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Abstract
Mineralized plasmatic matrix (MPM) is used as one of the most recent grafting materials. It is an autologous blood product highly concentrated in platelets and fibrin combined with bone substitute. The fibrin can become bound to bone particles and the grafting material is easy to shape. MPM became increasingly favourable in improving treatment outcomes of dental implants due to the efficiency of MPM in bone formation.
Objectives: to compare both clinically and radiographically the effect of the MPM versus beta tricalcium phosphate on osseointegration in immediate implant placement of mandibular molar teeth.
Materials and Methods: A randomized clinical study was done on sixteen patients, who complain from badly distructed mandibular posterior teeth. The patients were distributed into two equal groups: group A, eight immediate implants were inserted in mandibular posterior area using MPM as a graft for el peri implant gap and group B, eight immediate implants were inserted in mandibular posterior area using beta tricalcium phosphate as a graft for el peri implant gap . All patients underwent clinical and radiographical evaluations for 6 months.
Results: The MPM group A showed statistically significant higher mean implant stability, a significant statistically higher bone density percent change and statistically significant lesser mean marginal bone loss after six months than - tricalcium phosphate group B. For both groups, during the six months period, no significant differences in peri implant probing depth was noted. Conclusion: MPM, which represents fibrin network with growth factors, enhances periimplant formation of bone in mandibular posterior area, and provides better bone density, implant stability and less marginal bone loss compared to - TCP.
Keywords: Mineralized Plasmatic Matrix; immediate implant; bone density; marginal bone loss; implant stability.