The difference between the boil and bite and the regular night guard is that the night guard you get from a dentist is customized to the shape of your teeth and it’s made from a hard plastic so it will last longer and can withhold the pressure of nighttime grinding. Whereas the boil and bite guard its not customized and it’s uncomfortable to wear. Also, it is not made from the same material as a dentist-made night guard so the longevity of the boil and bite may be cut short. Even though the boil and bite is cheaper, a custom night guard will save you over the long term.