The most straightforward and least costly nightguard is made of plastic or another soft material that covers your upper teeth. They are available in a variety of sizes and are placed in your mouth at night. Since this nightguard does not allow for customization, it sometimes results in an inadequate fit that is uncomfortable and unpleasant for patients. Additionally, may also impair your breathing as you sleep.
Another common form of nightguard is the boil and bite guard. This nightguard is constructed of a flexible thermoplastic material that is intended to be put in hot water and then bit into by the patient. They then press the mouthguard firmly between their teeth when they bite down and the silicone takes on the form of the teeth and gums as it cools. While this is a more secure fit than a plastic guard, it can be cumbersome and can impair speech or breathing.
Custom nightguards are made specifically for each patient. A mold of your teeth is taken, and the nightguard is made in a laboratory. These nightguards are made to match your mouth perfectly and should not impair your breathing or ability to speak.