Note: Recent studies have suggested that if you have TMJ issues, a lower night guard may be slightly more effective.

Low-quality materials may not provide the same comfort or protection and may lead to gum irritation and damage. Bad Fit. Your night guard must fit your teeth; too tight or loose night guards can move around in your mouth, causing discomfort and, over time, leading to gum damage, soreness, or even receding gums.

In a mechanical sense, an anterior bite guard is the best for jaw clenching because it completely prohibits contact of the posterior teeth. It is also the best for acute pain due to jaw injury because it will be the most efficient at decreasing jaw muscle hyperactivity.

A teeth protector for sleeping does not actually stop you from clenching or grinding your teeth; however, it does shield and cushion the teeth from excessive wear and helps re-establish the natural space between the upper and lower teeth.