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Women's Rugby World Cup to Adopt Flashing Mouthguards to Signal Head Impact

ENGLAND, AUG 11 – The mouthguards will flash red to indicate severe head impacts, aiming to improve player safety and concussion management, with full player opt-in confirmed for the tournament.

  • At the Women’s Rugby World Cup, World Rugby will debut flashing LED mouthguards that light up when players suffer significant head impacts.
  • After piloting instrumented mouthguards in 2023, nearly 300 former players launched legal action over brain injuries, prompting safety measures in rugby union.
  • Using built-in accelerometers and gyroscopes, Prevent Biometrics' mouthguards alert when impacts exceed 75Gs for men or 65Gs and 4,500 rad/s² for women, flashing red for match officials.
  • Beyond concussion checks, when the LED guard flashes, the referee will stop play and the player will leave for assessment, and Dr Starling warned foul play could be identified without substantial impact.
  • World Rugby plans to expand the system across top-flight competitions, with the Premiership and United Rugby Championship following the Women’s Rugby World Cup, comparing data with the NFL and piloting in Australia’s NRL and AFL.
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Women's Rugby World Cup to adopt flashing mouthguards to signal head impact

Mouthguards that light up to indicate a player has suffered a significant head impact will be used at the Women's Rugby World Cup, officials announced Monday.

·Missoula, United States
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Left

The players who will compete in the Rugby World Cup will wear tooth protectors that will light up in the event of a major head impact.

·Paris, France
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World Rugby announced this Monday the wearing of connected tooth protectors at the World Cup, which will start on August 22nd. A major step forward for the safety and detection of concussions.

·Paris, France
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Irish Examiner broke the news in Ireland on Monday, August 11, 2025.
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