Custom dental appliances are specialized devices designed to fit the unique shape of an individual's mouth. They are often used to correct dental issues, improve oral health, or enhance comfort. Examples include mouthguards for sports, retainers for maintaining teeth alignment, and night guards to prevent teeth grinding. These appliances are typically made from durable materials and are created through a process that involves taking precise measurements of the patient's mouth. This ensures a proper fit, which is essential for effectiveness and comfort. Custom dental appliances are often recommended by dentists or orthodontists based on individual needs.