Finite Element Analysis of Stress Distribution in Tooth-Implant-Supported Prostheses: Impact of Periodontal Support, Tooth Count, and Implants

Stress Distribution in Tooth-Implant-Supported Prostheses

Authors

  • Farzan Younesi Prosthodontics Department, Dental Faculty, Islamic Azad University of Tehran
  • Solmaz Soleimanpour Department of Prosthodontics, Faculty of Dentistry, Shahed University, Tehran, Iran
  • Mohammad Alihemmati Department of Prosthodontics, Faculty of Dentistry, Shahed University, Tehran, Iran
  • Fatemeh Bakhtiari Department of Prosthodontics, Faculty of Dentistry, Shahed University, Tehran, Iran
  • Farnaz Taghavi Department of Prosthodontics, Faculty of Dentistry, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  • Maryam Jahangiri Department of Prosthodontics, Faculty of Dentistry, Shahed University, Tehran, Iran
  • Shojaedin Shayegh Department of Prosthodontics, Faculty of Dentistry, Shahed University, Tehran, Iran

DOI:

https://doi.org/10.31661/gmj.v13iSP1.3608

Keywords:

Keywords: Tooth-Implant-Supported Prosthesis; Finite Element Analysis; Periodontal Support; Stress; Von Mises Stress

Abstract

Background: Biomechanical factors are crucial for the success of tooth/implant-supported prostheses. Despite advancements in implantology, connecting natural teeth to implants remains challenging due to differences in movement, leading to potential complications. This study investigated the impact of periodontal support, number of teeth, and implants on stress distribution in tooth-implant-supported prostheses using three-dimensional (3D) finite element analysis. Material and Methods: This study utilized 3D finite element analysis to evaluate six virtual tooth/implant-supported prostheses with two levels of periodontal support (normal and weak) and three bridge designs (three units, four units with two dental abutments, and four units with two implants). To create the mandibular bone model, the cone beam computed tomography (CBCT) data from a middle-aged patient was used. One ITI implant (4.1 × 10 mm) was used for the fixture model. Models of teeth and bridges were designed according to the principles of metal-ceramic prosthesis design. A static force of 250 N was applied in vertical and oblique directions (at 45 degrees to the longitudinal axis). Maximum Von Mises stress was calculated in megapascals, and stress contour diagrams were generated. Results: Poor periodontal support resulted in a slight increase in stress on the implant and bone. Increasing the number of teeth and implants significantly reduced the stress on the implant and bone. Stress variations were notably greater when applying oblique forces compared to vertical forces. Conclusion: A tooth with a crown-to-root ratio of 1:1 remains suitable as an abutment. Increasing the number of teeth and implants, along with occlusal adjustment, is recommended to reduce stress in the bone and minimize lateral forces applied to the prosthesis, thereby decreasing the risk of marginal bone loss.  

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Published

2024-12-08

How to Cite

Younesi, F., Soleimanpour, S., Alihemmati, M., Bakhtiari, F., Taghavi, F., Jahangiri, M., & Shayegh, S. (2024). Finite Element Analysis of Stress Distribution in Tooth-Implant-Supported Prostheses: Impact of Periodontal Support, Tooth Count, and Implants: Stress Distribution in Tooth-Implant-Supported Prostheses. Galen Medical Journal, 13(SP1), E3608. https://doi.org/10.31661/gmj.v13iSP1.3608