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Published on: October 18, 2021
Implant marginal bone loss in maxillary sinus grafts
Ran Herzberg1, Eran Dolev, Devorah Schwartz-Arad
1Department of Prosthodontics, The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.
Summary
Smoking and implant surface area significantly impact marginal bone loss (MBL) around dental implants in grafted maxillary sinuses. These factors, along with delayed implantation, require consideration for long-term implant success criteria.
Area of Science:
- Dental Implantology
- Oral Surgery
- Periodontology
Background:
- Maxillary sinus grafting is a common procedure to augment bone volume for dental implant placement.
- Assessing marginal bone loss (MBL) is crucial for evaluating the long-term success of implants in these augmented sites.
Purpose of the Study:
- To evaluate marginal bone loss (MBL) around implants placed in maxillary sinus grafts.
- To identify factors influencing MBL in this patient population.
Main Methods:
- Retrospective analysis of 160 implants in 70 patients following 81 sinus graft procedures.
- Radiographic assessment of MBL over a 6 to 56.5-month follow-up period.
- Statistical analysis of habits, surgical, and prosthetic parameters in relation to MBL.
Main Results:
- Cumulative survival and radiographic success rates were 95.5% and 83.7% at 4.5 years.
- Smoking, smaller implant surface area, and delayed implantation were associated with increased MBL.
- Delayed implantation showed a stronger association with MBL in cases with less than or equal to 4 mm of residual bone.
Conclusions:
- Implant survival and success rates are comparable to existing literature, though MBL criteria often vary.
- Smoking appears to be a significant risk factor for implant success.
- Larger implant surface areas may mitigate negative effects of compromised bone quality, and simultaneous implantation should be considered when primary stability is achievable.
