Staff Answer
Aug 05, 2026 - 06:31 PM
Choose an Upper Guard if:
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You want the standard, most widely prescribed fit that stays securely in place overnight.
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You tend to push your lower jaw forward or side-to-side (upper guards provide a smooth, flat biting surface for the lower teeth to glide over).
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You do not suffer from a strong gag reflex.
Choose a Lower Guard if:
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You have a sensitive gag reflex triggered by material against your upper palate.
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You find upper guards push your upper lip out or make mouth breathing/dryness worse.
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You have extensive dental work (crowns, bridges, veneers) on your upper teeth that you want to avoid placing fit-tension on.
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You naturally rest your tongue firmly on the roof of your mouth while sleeping.
Source: https://www.teethnightguard.com/
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