Objective : This study was established to evaluate the osteogenic potential of the maxillary sinus in a two-stage sinus membrane elevation using titanium mesh to maintain the created space after membrane elevation without the use of any graft or space-filling material for future site development for the placement of dental implants in severely atrophied posterior maxillary ridgeMaterial and Methods: This study was a randomized clinical trial (RCT), which used cone beam computed tomography imaging to measure the exact remaining bone height for the posterior maxillary ridge for 4 patients indicated for bilateral lateral sinus elevation and future implant placement with a total of 8 surgeries. 4 sides were done using xenogenic graft mixed with autogenous graft (Group A) and the other 4 sides (Group B) were done using a Titanium mesh to support the Schniderian membrane at the new height without using any grafting material. The surgeries were carried out using the Dentium Advanced Sinus Kit (DASK). The primary outcome was the new bone height (in mm) using CBCT after 6 months.Results: For group A, the results showed a statistically significant difference between (Pre –Bone Graft) (3.38 ± 0.88) mm and (Post - Bone Graft) (12.57 ± 2.02) mm, where (p=0.001). For group B, the results showed a statistically significant difference between (Pre -Titanium) (3.52 ± 1.04) group and (Post -Titanium) (11.47 ± 2.77) group where (p=0.006).The mean bone density for the newly formed bone after 6 months for group B was 182 ± 37.31 Hu which is too close to that of the Group A results which was 246.75 ± 43.29 Hu, meaning that there was almost no difference between the results of both groups.Conclusions:Although there was no significant difference between the results of the Titanium group and the bone graft group, this proved that the use of a Titanium mesh to support the Schniderian membrane at a new level after elevation shows predictable and reliable results without using any grafting material and that the maintenance and protection of the blood clot showed new bone formation.