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Validation and Comparison of Instrumented Mouthguards for Measuring Head Kinematics and Assessing Brain Deformation in Football Impacts.

Publication ,  Journal Article
Liu, Y; Domel, AG; Yousefsani, SA; Kondic, J; Grant, G; Zeineh, M; Camarillo, DB
Published in: Ann Biomed Eng
November 2020

Because of the rigid coupling between the upper dentition and the skull, instrumented mouthguards have been shown to be a viable way of measuring head impact kinematics for assisting in understanding the underlying biomechanics of concussions. This has led various companies and institutions to further develop instrumented mouthguards. However, their use as a research tool for understanding concussive impacts makes quantification of their accuracy critical, especially given the conflicting results from various recent studies. Here we present a study that uses a pneumatic impactor to deliver impacts characteristic to football to a Hybrid III headform, in order to validate and compare five of the most commonly used instrumented mouthguards. We found that all tested mouthguards gave accurate measurements for the peak angular acceleration, the peak angular velocity, brain injury criteria values (mean average errors < 13, 8, 13%, respectively), and the mouthguards with long enough sampling time windows are suitable for a convolutional neural network-based brain model to calculate the brain strain (mean average errors < 9%). Finally, we found that the accuracy of the measurement varies with the impact locations yet is not sensitive to the impact velocity for the most part.

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Published In

Ann Biomed Eng

DOI

EISSN

1573-9686

Publication Date

November 2020

Volume

48

Issue

11

Start / End Page

2580 / 2598

Location

United States

Related Subject Headings

  • Mouth Protectors
  • Male
  • Humans
  • Head Protective Devices
  • Head
  • Football
  • Brain Concussion
  • Biomedical Engineering
  • Biomechanical Phenomena
  • Acceleration
 

Citation

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Liu, Y., Domel, A. G., Yousefsani, S. A., Kondic, J., Grant, G., Zeineh, M., & Camarillo, D. B. (2020). Validation and Comparison of Instrumented Mouthguards for Measuring Head Kinematics and Assessing Brain Deformation in Football Impacts. Ann Biomed Eng, 48(11), 2580–2598. https://doi.org/10.1007/s10439-020-02629-3
Liu, Yuzhe, August G. Domel, Seyed Abdolmajid Yousefsani, Jovana Kondic, Gerald Grant, Michael Zeineh, and David B. Camarillo. “Validation and Comparison of Instrumented Mouthguards for Measuring Head Kinematics and Assessing Brain Deformation in Football Impacts.Ann Biomed Eng 48, no. 11 (November 2020): 2580–98. https://doi.org/10.1007/s10439-020-02629-3.
Liu Y, Domel AG, Yousefsani SA, Kondic J, Grant G, Zeineh M, et al. Validation and Comparison of Instrumented Mouthguards for Measuring Head Kinematics and Assessing Brain Deformation in Football Impacts. Ann Biomed Eng. 2020 Nov;48(11):2580–98.
Liu, Yuzhe, et al. “Validation and Comparison of Instrumented Mouthguards for Measuring Head Kinematics and Assessing Brain Deformation in Football Impacts.Ann Biomed Eng, vol. 48, no. 11, Nov. 2020, pp. 2580–98. Pubmed, doi:10.1007/s10439-020-02629-3.
Liu Y, Domel AG, Yousefsani SA, Kondic J, Grant G, Zeineh M, Camarillo DB. Validation and Comparison of Instrumented Mouthguards for Measuring Head Kinematics and Assessing Brain Deformation in Football Impacts. Ann Biomed Eng. 2020 Nov;48(11):2580–2598.
Journal cover image

Published In

Ann Biomed Eng

DOI

EISSN

1573-9686

Publication Date

November 2020

Volume

48

Issue

11

Start / End Page

2580 / 2598

Location

United States

Related Subject Headings

  • Mouth Protectors
  • Male
  • Humans
  • Head Protective Devices
  • Head
  • Football
  • Brain Concussion
  • Biomedical Engineering
  • Biomechanical Phenomena
  • Acceleration