Do Subperiosteal or Zygoma Implants Have a Positive Effect on Facial Trauma? A Study of Finite Element Analysis of a Severely Resorbed Maxilla


Aktaş K. M., Doğaner B., Selvi F.

AÇBID 16th INTERNATIONAL CONRESS, Antalya, Turkey, 10 - 14 May 2023, pp.18

  • Publication Type: Conference Paper / Summary Text
  • City: Antalya
  • Country: Turkey
  • Page Numbers: pp.18
  • Istanbul University Affiliated: Yes

Abstract

Do Subperiosteal or Zygoma Implants Have a Positive Effect on Facial Trauma? A Study of Finite Element Analysis of a Severely Resorbed Maxilla Kerim Muhammed Aktaş, Berker Doğaner, Fırat Selvi Oral and Maxillofacial Surgery, Istanbul University, School of Dentistry, Istanbul, Turkey

Objective: Investigation of the effects of trauma forces on the Le Fort lines of a severely resorbed maxilla reconstructed with either subperiosteal or zygomatic implants, using finite element analysis method.

Materials-Methods: Our study consists of 3 models. A cone-beam tomography was obtained from a human cadaver skull with a severely resorbed maxilla to create a baseline control model. The second model was created by designing and applying two custom-made subperiosteal implants for this edentulous maxilla. Finally, our third model was created by mimicking a quad-zygoma model for the same severely resorbed maxilla. Three increasing trauma forces were applied in the antero-posterior direction onto the anterior nasal spine of each model and the force distributions were examined at the pre-determined points on the Le Fort 1, 2, and 3 regions, using finite element analysis.

Results: The trauma from the anterior nasal region, our model with subperiosteal implant and our model with zygomatic implant were found to be more successful when evaluated in terms of stresses in Le Fort lines compared to our control model. Compared to the control model, the models with subperiosteal or zygoma implants showed superior results in terms of trauma force distributions at the Le Fort lines.

Conclusion: The severely resorbed maxilla models reconstructed with custom-made subperiosteal implants or zygomatic implants may be considered more resistant to facial forces applied in the antero-posterior direction at the Le Fort 1, 2 and 3 lines, compared to the severely resorbed maxillary model without any hardware.

Keywords: trauma, subperiosteal implants, zygoma implants