Quarterback Mouth Guards: Speech Intelligibility and Player Preference

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Abstract
In brief: Five mouth guard designs were made for 18 high school and university quarterbacks. The mouth guards were evaluated for speech intelligibility when the players called representative signals. Speech intelligibility was significantly better with custom mouth guards constructed on a cast of the player's dental arch than with the self-adapted mouth guards. All quarterbacks preferred the custom mouth guard with occlusion and restricted palatal coverage for use during the season.

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