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Background <p>Implant-supported prosthetic rehabilitation has become the treatment of choice for edentulous patients, offering improved function, comfort, and quality of life. Among the available options, overdentures supported by endosseous implants stand out for their stability and ease of maintenance. These prostheses can be customized to meet the patient’s anatomical and financial conditions, allowing for individualized treatment planning.</p> Purpose <p>Magnetic overdentures provide functional and hygienic benefits for edentulous patients; however, their safety in magnetic resonance imaging (MRI) environments remains a clinical concern due to the presence of ferromagnetic components. This review aimed to evaluate the interactions between implant-supported magnetic overdentures and MRI settings.</p> Methods <p>A non-systematic literature search was conducted in PubMed, Scopus, and Web of Science, focusing on experimental, clinical, and review studies</p> Results <p>Findings indicate that the risk of component displacement and thermal injury is minimal, with deflection angles and temperature increases remaining well below critical thresholds. However, ferromagnetic components may cause significant image artifacts, potentially impairing diagnostic accuracy. Fixed and hybrid prostheses made of titanium or zirconia are generally safe and need not be removed. In contrast, removable magnetic overdentures, particularly those with unknown alloy compositions, should be extracted prior to MRI</p> Conclusion <p>Although the available evidence supports clinical safety, it is limited by methodological heterogeneity and small sample sizes. Further in vivo studies and standardization of MRI compatibility testing are recommended.</p>

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MRI Safety of Magnetic Overdentures and Implants: a Review of Current Evidence and Recommendations

  • 期刊论文

  • 发表日期：

    2025年8月23日

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  • Pablo Criado Villalón,
  • Gonzalo Herrera Calvo,
  • Julia Medina del Valle,
  • Ignacio Caubet Sáez-Torres,
  • Alejandro Arroz García de Eulate,
  • Beatriz Vázquez Gutiérrez,
  • María Fe García Reija

摘要

Background

Implant-supported prosthetic rehabilitation has become the treatment of choice for edentulous patients, offering improved function, comfort, and quality of life. Among the available options, overdentures supported by endosseous implants stand out for their stability and ease of maintenance. These prostheses can be customized to meet the patient’s anatomical and financial conditions, allowing for individualized treatment planning.

Purpose

Magnetic overdentures provide functional and hygienic benefits for edentulous patients; however, their safety in magnetic resonance imaging (MRI) environments remains a clinical concern due to the presence of ferromagnetic components. This review aimed to evaluate the interactions between implant-supported magnetic overdentures and MRI settings.

Methods

A non-systematic literature search was conducted in PubMed, Scopus, and Web of Science, focusing on experimental, clinical, and review studies

Results

Findings indicate that the risk of component displacement and thermal injury is minimal, with deflection angles and temperature increases remaining well below critical thresholds. However, ferromagnetic components may cause significant image artifacts, potentially impairing diagnostic accuracy. Fixed and hybrid prostheses made of titanium or zirconia are generally safe and need not be removed. In contrast, removable magnetic overdentures, particularly those with unknown alloy compositions, should be extracted prior to MRI

Conclusion

Although the available evidence supports clinical safety, it is limited by methodological heterogeneity and small sample sizes. Further in vivo studies and standardization of MRI compatibility testing are recommended.