Cross-sectional study on the prevalence of sinus lifting procedures among patients receiving maxillary dental implants at Prince Rashed Alhasan Military Hospital, Northern Jordan

Background: Pneumatization of the maxillary sinus following tooth extraction can reduce residual bone height (RBH), often making it inadequate for dental implant placement in the posterior maxilla. The sinus lifting procedure (SLP) elevates the Schneiderian membrane and applies bone grafts to create sufficient vertical bone space for implant placement. However, epidemiological data on the prevalence of sinus lifting procedures among patients receiving maxillary dental implants remain limited, particularly within military healthcare institutions in Northern Jordan.
Objective: To determine the prevalence of sinus lifting procedures among patients receiving maxillary dental implants at Prince Rashed Alhasan Military Hospital and to identify demographic, structural, and procedural predictors of SLP requirement.
Methods: The cross-sectional study was conducted among the 420 eligible patients who had undergone maxillary dental implants at PRMH during January 2023 and September 2025. The data regarding demographics, implant characteristics, timing of placement, and comorbidities were collected. Bivariate analysis (χ²) and binary logistic regression were performed to identify independent predictors of SLP requirement.
Results: Sinus lifts were performed in 25.24% of patients (106/420). Mean number of implants per patient was 2.04±0.98. Immediate implant placement significantly reduced the need for SLP (adjusted OR=0.029, 95% CI: 0.004–0.177, p<0.001). Each additional implant increased SLP odds by 37.7% (adjusted OR=1.377, 95% CI: 1.129–1.680, p=0.001). Diabetes and hypertension were not significant predictors (p>0.05).
Conclusion: SLP is required in one-quarter of maxillary implant patients at this institution. Time-dependent bone resorption after extraction and higher implant numbers are key predictors. Early diagnosis, modern imaging and ridge preservation are key to avoid complications.