Radiographic Assessment of Crestal Maxillary Sinus Membrane Elevation Using Different Dental Implant Heights in Atrophic Posterior Maxilla

Document Type : Original Article

Authors

1 Master Candidate at Department of Oral & Maxillofacial Surgery, Faculty of Dentistry, Cairo University, Cairo, Egypt.

2 Professor, Department of Oral & Maxillofacial Surgery, Faculty of Dentistry, Cairo University, Cairo, Egypt.

3 Associate Professor of Oral and Maxillofacial surgery Cairo University

Abstract

Background: Evaluation of primary stability and amount of bone gained using trans-crestal osseodensification technique and the standard concave osteotomes at different heights in patients with posterior maxillary sinus pneumatization.
Methods: This randomized controlled parallel group clinical trial was on thirty-three patients who were divided into three equal groups: group 1 with a lifting height of 2mm, group 2 with a lifting height of 4mm, and group 3 with lifting height at (6mm), with the same inclusion and exclusion criteria. Three different manipulations were performed using the same technique in the vertically deficient posterior maxilla with simultaneous implant placement at different heights and preserving the Schneiderian membrane intact. Post-operatively, patients were assessed three days after the surgery. Subsequently, assessments were conducted monthly to identify any indications of dehiscence.
Results: No difference was noted between study groups (using osteotome with the final apical diameter at various levels 2, 4, or 6 mm) regarding the change of stability; 23.36 ± 6.25 vs. 17.00 ± 4.33 vs. 22.27 ± 5.17. However, higher bone gain was noted among cases of sinus elevation with the final apical diameter at the level of 6 mm beyond the cortical bone: 5.80 ± 0.73A vs. 3.95 ± 0.83B vs. 2.35 ± 0.55C.
Conclusions: In managing cases with partial edentulous atrophic posterior maxilla seeking implant, sinus elevation using osteotome with the final apical diameter at various levels (2, 4, or 6 mm) beyond the cortical bone was associated with higher bone gain formation around dental implants.

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Egyptian Dental Journal
Volume 71, Issue 3 - Serial Number 2
July (Oral Surgery)
July 2025
Pages 2071-2083

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