Related Experiment Video
Updated: Apr 18, 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
Full-Arch Trans-Sinus Implant Placement Using a Stackable Surgical Guide With Digitally Planned Antrostomy: A Case
Mattia Manfredini1,2, Matteo Pellegrini1,2, Pier Paolo Poli1,2
1University of Milan, Department of Biomedical, Surgical and Dental Sciences, Via della Commenda 10, 20122, Milan, Italy, unimi.it.
Introduction:
This report presents a fully digital workflow for maxillary full-arch rehabilitation that integrates trans-sinus implant placement into a stackable guided surgery system. The technique incorporates a digitally planned antrostomy guide to enable controlled lateral sinus access.
Methods:
A sequential stackable guide protocol was developed, including key, base, drive, and prosthetic templates, together with a custom antrostomy guide. The system was designed to translate the virtual plan into precise implant positioning and reproducible lateral window preparation for trans-sinus implant placement.
Results:
The digital workflow enabled accurate localization of the sinus window and guided insertion of a tilted trans-sinus implant along the planned trajectory. The combined guide system provided controlled sinus access and stable implant placement suitable for immediate loading.
Conclusion:
Integrating a digitally planned antrostomy guide within a stackable surgical system enhances precision in full-arch rehabilitations requiring trans-sinus implants. This digital technique expands the applicability of guided surgery to challenging posterior maxillary scenarios.
