Two-Stage Crestal Sinus Elevation Using Osseodensification Technique for Single Molar Restoration: A Case Report.

This report presents a two-stage approach for crestal sinus elevation using the osseodensification technique in a case of severe vertical bone deficiency (<3 mm). Traditional approaches to maxillary sinus elevation with less than 3 mm of residual bone height typically require a lateral window technique. A 55-year-old male patient presented with a missing maxillary right first molar with residual bone height of 2 mm. The treatment involved: Stage 1: Crestal sinus elevation using osseodensification with Versah burs and allograft placement. Stage 2: After 6 months of healing, placement of a Straumann Bone Level Tapered implant (4.1 × 10mm) with 35 Ncm insertion torque and final prosthetic restoration was started 4 months after implant placement. Then, follow-up at 12 months demonstrated stable peri-implant tissues, maintained bone levels, and excellent patient satisfaction. Radiographic evaluation showed uniform bone formation around the implant and maintained sinus floor elevation. The case demonstrates that osseodensification can provide a predictable alternative to lateral window approaches even in cases with severe vertical bone deficiency (<3 mm), offering reduced invasiveness with enhanced bone density and favorable clinical outcomes.