Finite Element Analysis of Stress in Bone and Abutment-Implant Interface under Static and Cyclic Loadings

Analysis of Bone around Implant

  • Saeed Nokar Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
  • Hamid Jalali Department of Prosthodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran AND Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
  • Farideh Nozari Private Practice, Tehran, Iran
  • Mahnaz Arshad Mail Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran AND Department of Prosthodontics, International Campus, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
Keywords:
Finite Element Analysis, Fractures, Stress, Dental Implants, Bone

Abstract

Objectives: The success of implant treatment depends on many factors affecting the bone-implant, implant-abutment, and abutment-prosthesis interfaces. Stress distribution in bone plays a major role in success/failure of dental implants. This study aimed to assess the pattern of stress distribution in bone and abutment-implant interface under static and cyclic loadings using finite element analysis (FEA).
Materials and Methods: In this study, ITI implants (4.1×12 mm) placed at the second premolar site with Synocta abutments and metal-ceramic crowns were simulated using SolidWorks 2007 and ABAQUS software. The bone-implant contact was assumed to be 100%. The abutments were tightened with 35 Ncm preload torque according to the manufacturer’s instructions. Static and cyclic loads were applied in axial (116 Ncm), lingual (18 Ncm), and mesiodistal (24 Ncm) directions. The maximum von Mises stress and strain values ​​were recorded.
Results: The maximum stress concentration was at the abutment neck during both static and cyclic loadings. Also, maximum stress concentration was observed in the cortical bone. The loading stress was higher in cyclic than static loading.
Conclusion: Within the limitations of this study, it can be concluded that the level of stress in single-unit implant restorations is within the tolerable range by bone.

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Published
2020-09-23
How to Cite
1.
Nokar S, Jalali H, Nozari F, Arshad M. Finite Element Analysis of Stress in Bone and Abutment-Implant Interface under Static and Cyclic Loadings. Front Dent. 17.
Section
Original Article