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Updated: Aug 21, 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
The influence of preoperative planning on the accuracy of dynamic navigation-assisted zygomatic implant placement: a
1Department of Oral Implantology, Peking University School and Hospital of Stomatology and National Clinical Research Centre for Oral Disease and National Engineering Laboratory for Digital and Material Technology of Stomatology and Beijing Key Laboratory of Digital Stomatology, Beijing, China.
Abstract:
This study was designed to investigate the correlation between preoperative planning-related factors and the accuracy of dynamic navigation-assisted zygomatic implant placement. Data were collected from patients who underwent dynamic navigation-assisted zygomatic implant placement between 2019 and 2024. Preoperative planning-related factors, including the density and engagement of the alveolar and zygomatic bone, type of zygomatic anatomy-guided approach, implant strategy, and implant site, were recorded, and the deviations of entry, exit, and angle were measured. Correlations between the preoperative planning-related factors and surgical deviations were analysed using generalized estimating equations. In addition, mechanical and biological complications were recorded during the postoperative follow-up. Fifty-four zygomatic implants were placed in 23 patients using a dynamic navigation system. The maximum entry, exit, and angle deviation was 5.18 mm, 8.99 mm, and 8.71°, respectively. Zygoma engagement was significantly correlated with entry deviation (P = 0.010). Furthermore, the implant site (anterior/posterior) was significantly correlated with angle deviation (P = 0.005). However, the effects of the other factors on the deviations were not significant. Dynamic navigation-assisted zygomatic implant placement is a reliable surgical approach. Nevertheless, attention should be paid to long zygoma engagement and posterior implant placement, as these factors may cause greater surgical deviations.
