Sinus Elevation only: Placement of two dental implants as mentioned above in sinus augmented by sinus elevation procedure, blood clot and CopiOs Pericardium Membrane (Zimmer Dental- Carlsbad, CA, USA) only. One implant will be TMDI (Zimmer Dental- Carlsbad, CA, USA) and the second will be Tapered Screw-Vent TSV-MTX (Zimmer Dental- Carlsbad, CA,USA). Implant stability will be determined by the insertion torque and RFV values at time of implant placement and after 1 month of healing on a monthly basis up until 12 months post implant placement. Thickness of bone surrounding implant body positioned in the sinus will be measured.