A nightguard is a dental appliance worn over the teeth while sleeping to protect them from damage caused by grinding or clenching, a condition known as bruxism. It is usually made from durable plastic or acrylic and is custom-fitted by a dentist to ensure comfort and effectiveness. By creating a protective barrier between the upper and lower teeth, a nightguard helps reduce excessive pressure on the teeth and jaw.

Wearing a nightguard can help prevent tooth wear, cracks, and fractures, as well as relieve jaw pain, headaches, and muscle tension associated with nighttime grinding. It can also protect dental work such as fillings, crowns, or veneers from damage. When used consistently and cared for properly, a nightguard can play an important role in maintaining long-term oral health and comfort.