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Updated: Apr 27, 2026
Real-Time Dynamic Navigation System for the Precise Quad-Zygomatic Implant Placement in a Patient with a Severely Atrophic Maxilla
Published on: October 18, 2021
Implants placed simultaneously with lateral window sinus augmentation using a putty alloplastic bone substitute for
Udatta Kher1, Ziv Mazor, Panagiotis Stanitsas
1*Private Practice, Mumbai, India; Visiting Faculty, Department of Implantology, SDM College of Dental Sciences, Dharwad, India. †Private Practice, Ra'anana, Israel. ‡Doctoral Candidate, Department of Computer Science, University of Minnesota, Minneapolis, MN. §Dental Fellow, Advanced Education Program in Periodontology, Department of Developmental and Surgical Sciences, University of Minnesota, Minneapolis, MN.
Dental implants in low bone height maxillary sinuses achieve good primary stability and osseointegration. Adequate implant stability, not minimum bone height, is crucial for sinus augmentation success.
Area of Science:
- Oral and Maxillofacial Surgery
- Dental Implantology
- Biomaterials
Background:
- Maxillary sinus pneumatization often reduces available bone height for dental implants.
- Evaluating implant primary stability in severely atrophic maxillae is critical.
Purpose of the Study:
- To assess primary implant stability in pneumatized maxillary sinuses with minimal residual bone height.
- To determine the relationship between residual bone height and implant stability.
Main Methods:
- Retrospective analysis of 17 patients undergoing simultaneous implant placement with modified direct sinus lift.
- Utilized sites with <5 mm vertical bone height, with adjacent sites (>5 mm) as controls.
- Measured primary implant stability via maximum insertion torque (>20 N/cm).
Main Results:
- 30 implants were placed with adequate primary stability.
- No significant association found between residual bone height and primary implant stability.
- Achieved a high implant survival rate of 96.67% over a mean follow-up of 15.74 months.
Conclusions:
- Minimal preoperative vertical bone height does not negatively impact implant osseointegration in this context.
- Adequate primary implant stability is the key prerequisite for simultaneous sinus augmentation and implant placement, rather than a fixed bone height.
- This approach supports successful dental implant rehabilitation in atrophic maxillae.
