Answer
Dec 29, 2022 - 10:55 AM
You can use professional teeth whitening gel with a custom night guard but for best results, custom-made teeth whitening trays work best with the gel. A custom night guard fits tight to the teeth and is trimmed below the gum line so the results will not be the best. With custom teeth whitening trays the material is thin, soft, very flexible, and trimmed around the gum line which allows the gel to disperse around each tooth for optimal teeth whitening effects.
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