Aim: To evaluate the level of bone height gain radiographically after closed sinus lifting carried out simultaneously with implant placement using hydraulic lift technique versus Summers' osteotome technique.
Methodology: Twenty-two patients with edentulous posterior maxilla, seeking for fixed restoration, were enrolled in this study. The residual bone height ranged from 6 mm to 8mm. All patients were randomly divided into two groups according to technique used for closed sinus lifting. The control group utilized Summers` osteotome technique and the study group utilized Hydraulic lift technique. Bone height gain was measured using CBCT immediately and 6 months post-operatively for both groups. Patient satisfaction was assessed after surgery and at final restoration for both techniques by numerical scale through a patient satisfaction chart.
Results: All cases were carried out successfully with no reported complication. The immediate bone height gain in control group has been increased by a mean value of (3.6±0.6mm). While in the study group has been increased by a mean value of (6.00±0.7mm). Comparing the 2 groups, the study group achieved more bone height gain than control group in both immediate and 6 months postoperative results, which was statistically significant difference. Patient satisfaction was more in study group (92.6±1.8) than control group (85.9±3.8), and the difference was statistically significant.
Conclusions: The hydraulic lift technique used in closed sinus lifting is better than Summers` osteotome technique by means of more bone height gain achieved around dental implants initially and after 6 months follow up as well as with more patient satisfaction.