How to Clean the NTI Night Guard

Written by laurel cornell robinson
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How to Clean the NTI Night Guard
NTI night guards are made for the front teeth to reduce jaw clenching. (Teeth and Mouth image by Sujit Mahapatra from

The NTI night guard was invented by Dr. James Boyd and approved by the FDA in 2006. It is a small, custom-fitted plastic device that slides on to the top front teeth and reduces the intensity of nighttime jaw clenching. In clinical studies, 82 per cent of subjects experienced a 77 per cent reduction in migraine headache pain when they used the NTI night guard. Dentists charge a patient £325 to £520 for the custom fitting, so it's important to take good care of it.

Skill level:

Things you need

  • Soapy water
  • Toothbrush
  • Hydrogen peroxide

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  1. 1

    Remove and rinse the night guard. NTI night guards are designed to be worn at night, although if necessary you could wear it during the day to get used to having it in your mouth. When you remove the device, the consultants at recommend using a soft toothbrush with soapy water, followed by a rinse with clear water.

    How to Clean the NTI Night Guard
    Rinse your night guard under running water. (detail of faucet and sink with running water image by nextrecord from
  2. 2

    Pour some hydrogen peroxide onto your appliance during the day if you are concerned about germs. Set it out of reach of children and pets. Rinse it with water before you put it back into your mouth at night. Remember that it is going into your mouth, so do not clean the NTI with anything toxic.

    How to Clean the NTI Night Guard
    Soak the NTI in hydrogen peroxide, then rinse. (water image by Du...¡an Zidar from
  3. 3

    Do not damage the appliance. The makers of the NTI night guard do not recommend using toothpaste to clean it.

    How to Clean the NTI Night Guard
    Never use toothpaste to clean your night guard. (brosse à dents image by Psop Photo from

Tips and warnings

  • You should never heat the NTI or boil it, since this could change the shape and negatively affect your jaw alignment.

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