Over-the-counter stock night guards can easily be purchased from a local pharmacy/drug store at a lower price than a custom night guard. These OTC solutions are mass-produced and usually come in three standard sizes. With some models, the guard can be adapted to one’s teeth every night using a ‘boil and bite’ method. Most who opt for this solution are left with a less-than-ideal fit. A custom night guard minimizes the risk of an improper fit as it will be molded based on a real impression of a patient's teeth.