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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
Three-dimensional finite elemental analysis of zygomatic implants in craniofacial structures
1Department of Oral Medicine, Oral and Maxillofacial Surgery, Tokyo Dental College, Chiba, Japan. ujigawa@tdc.ac.jp
Summary
This study analyzed stress distribution around zygomatic implants using 3D finite element analysis. Connected implants in resorbed maxillae reduced stress concentration, while standalone implants showed stress at the fixture-abutment junction.
Area of Science:
- Biomechanical Engineering
- Craniofacial Surgery
- Dental Implantology
Background:
- Zygomatic implants offer a solution for severe maxillary resorption.
- Understanding stress distribution is crucial for implant success and longevity.
- Finite element analysis provides detailed biomechanical insights.
Purpose of the Study:
- To analyze stress distribution in craniofacial structures around zygomatic osseointegrated implants.
- To compare stress patterns between zygomatic implants with and without connected implants.
- To evaluate the biomechanical behavior under occlusal loading.
Main Methods:
- Utilized integrated Digital Imaging and Communications in Medicine (DICOM) data for 3D craniofacial models.
- Employed three-dimensional finite elemental analysis to compare stress distribution.
- Developed a digital biomechanical model for detailed anatomical analysis.
Main Results:
- In severely resorbed maxillae, connected implants prevented stress concentration around alveolar bone.
- Standalone zygomatic implants exhibited stress concentration at the zygomatic bone, implant mid-section, and fixture-abutment junction.
- Occlusal forces were primarily supported by the zygomatic bone and transferred via the infrazygomatic crest.
Conclusions:
- Connected implants enhance stress distribution in atrophic maxillae.
- Standalone zygomatic implants require careful consideration of stress points.
- Zygomatic bone plays a key role in supporting and distributing occlusal loads.
