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Comparison of Healing Outcomes Between Simultaneous and Staged Implant Placement With Sinus Floor Elevation: A
Ji-Youn Hong1, Yeek Herr1, Nadja Naenni2
1Department of Periodontology, Kyung Hee University College of Dentistry, Periodontal-Implant Clinical Research Institute, Kyung Hee University Medical Center, Seoul, Republic of Korea.
Journal of Clinical Periodontology
|August 22, 2025
Summary
Simultaneous implant placement with maxillary sinus floor augmentation (MSFA) showed comparable healing to a staged approach in thin bone height. Results from this animal study suggest similar bone regeneration and implant contact for both methods.
Area of Science:
- Oral and Maxillofacial Surgery
- Periodontology
- Regenerative Dentistry
Background:
- Maxillary sinus floor augmentation (MSFA) is crucial for dental implant placement in atrophic maxillary sinuses.
- The timing of implant placement relative to MSFA (simultaneous vs. staged) is debated, particularly in cases of limited bone height.
Purpose of the Study:
- To compare histological healing outcomes of dental implants placed simultaneously versus staged after MSFA in a rabbit model with thin bone height.
Main Methods:
- Maxillary sinus floor augmentation (MSFA) was performed in rabbits, followed by either simultaneous (SMT) or staged (STG) implant placement.
- Histomorphometric and micro-computed tomographic analyses were conducted 8 weeks post-implantation to assess bone regeneration and implant integration.
Main Results:
- Micro-CT revealed comparable volumes of newly formed bone (NB) surrounding implants in both SMT and STG groups.
- Histomorphometric analysis showed no significant differences in NB amount or bone-to-implant contact percentage between the simultaneous and staged approaches.
Conclusions:
- Simultaneous implant placement with MSFA achieves comparable radiographic and histological outcomes to a staged approach in sinuses with thin bone height.
- These findings, derived from an animal model, suggest that simultaneous placement may be a viable option, though clinical extrapolation requires caution.
