.  2024 Mar;28(1):42-53. 10.32542/implantology.2024005.

Endosinus Bone Gain after Osteotome Sinus Floor Elevation Without Bone Grafting: A Retrospective Study

• Keum HI
• Lim HJ

• KMID: 2562832
• DOI: http://doi.org/10.32542/implantology.2024005

Abstract

Purpose
This retrospective study evaluated the radiographic and clinical outcomes of osteotome sinus floor elevation (OSFE) without bone grafts, and analyzed the factors influencing endosinus bone remodeling. Materials and Methods: Radiographic and clinical data from 44 implants in 36 patients were collected after a follow-up period of 6 months to 6.5 years (mean, 2.04 years). Mean residual bone height (RBH) was 5.0 ± 1.3 mm. The length of the implant protruding into the sinus and endosinus bone gain (ESBG) on radiographs were measured.
Results
All the 44 implants survived until the final follow-up period. Groups were divided according to an RBH of 5 mm at the time of implant placement, with 22 implants per group. Mean ESBG was 2.40 ± 1.48 mm in an RBH < 5 mm group and 2.01 ± 0.87 mm in an RBH ≥5 mm group. Endosinus bone gain was significantly higher in the RBH < 5 mm group for up to one year after the implant placement; however, there was no significant difference between the two groups at the final follow-up period.
Conclusion
Osteotome sinus floor elevation without bone grafting is a predictable procedure for achieving endosinus bone remodeling when RBH is < 5 mm.

Keyword

Dental implants; Maxillary sinus; Radiographic analysis