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Influence of Treatment Plans on Stress and Deformation Distribution in Mandibular Implant-Supported Overdenture and Mandibular Bone under Traumatic Load: A 3D FEA

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Abstract

Purpose

Using three-dimensional finite element analysis, this study aimed to provide insight into the complexity of stresses and deformations induced by trauma on a mandible reconstructed with 5 different treatment plans of implant-supported overdentures and 3 different implant lengths.

Methods

A 3D model was generated from a Cone Beam Computed Tomography CBCT image of the edentulous mandible. A perpendicular force of 700 N was applied to the mandible in three different locations.

Results

Regardless of traumatic load location, peak maximum principal stress in the cortical and cancellous bone of the model – with an overdenture supported by 5 implants following an overdenture supported with 3 implants – was minimal. Of the 45 models, the highest maximum principal stress within the cortical bone was measured in an overdenture on 2 implants (510 MPa), and the lowest (55 MPa) was observed in an overdenture on 3 implants. An increase in the load from 700 N to 2000 N increased the maximum principal stress levels within the bone up to 127%.

Conclusions

The study revealed that stress and deformation distribution within a mandibular bone treated with dental implants were influenced by the treatment plan but not by implant length. Furthermore, the implant-bone interface was found to be the most fracture-prone site, followed by the condylar neck.

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Data Availability

The datasets generated during the current study are available from the corresponding author on reasonable request.

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Funding

This work does not receive any funding or support.

Author information

Authors and Affiliations

  1. Department of Periodontics, Dental School, Urmia University of Medical Sciences, 5714783734 , Urmia, Iran

    Anahita Manafi Khajeh Pasha & Ehsan Khashabi

  2. Department of Civil Eng, Faculty of Eng, Urmia University, 5756151818, Urmia, Iran

    Reza Mahmoudi Sheykhsarmast

  3. IMAGEi Consultant Co, Tokyo, 102-0083, Japan

    Siavash Manafi Khajeh Pasha

Authors
  1. Anahita Manafi Khajeh Pasha
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  2. Reza Mahmoudi Sheykhsarmast
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  3. Siavash Manafi Khajeh Pasha
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  4. Ehsan Khashabi
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Contributions

Manafi, A. (corresponding author), planned the project, developed the main concept, designed the models and computational frameworks, analyzed the data, and wrote the manuscript. Mahmoudi, R., planned out the technical details, assisted with analyzing the models and provided valuable feedback on the project. M. K. Pasha, S., and Khashabi, E., supervised the project and verified the results. All authors discussed the results and contributed to the final manuscript.

Corresponding author

Correspondence to Anahita Manafi Khajeh Pasha.

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Conflict of interest

The authors declare no competing financial or nonfinancial interests.

Ethical Approval

This FEM study was approved by the local ethical committee of Urmia University of Medical Sciences and was carried out in accordance with relevant guidelines and regulations.

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Manafi Khajeh Pasha, A., Mahmoudi Sheykhsarmast , R., Manafi Khajeh Pasha, S. et al. Influence of Treatment Plans on Stress and Deformation Distribution in Mandibular Implant-Supported Overdenture and Mandibular Bone under Traumatic Load: A 3D FEA. J. Med. Biol. Eng. 41, 543–557 (2021). https://doi.org/10.1007/s40846-021-00639-7

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  • DOI: https://doi.org/10.1007/s40846-021-00639-7

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