When considering all the options for night guards, over-the-counter can work as a solution for bruxism (teeth grinding and jaw clenching), but they are the least effective. These kinds of night guards do not always work as effectively or efficiently as customized night guards simply because they are not tailored to fit your unique smile/ mouth. OTC night guards are often a one-size-fits-all design which can also cause further irritation or dental issues if it does not fit properly in your mouth
If your primary goal is the health and protection of your teeth, OTC night guards are not your best option.
Generally, your best option is to purchase a custom-fitted night guard from ClearClub to ensure full dental-grade protection against bruxism.