Zum Inhalt springen

Retainers vs Nightguards: What’s the Real Difference?

Aus Kössler Lehrerlexikon




A lot of patients mix up retainers and nightguards because both are custom-made oral devices that fit over the teeth. Their intended roles are not interchangeable and are designed with different materials and goals in mind.



A retainer is used after orthodontic treatment to keep your teeth aligned as intended. When your bite and spacing are finalized, they may drift out of position due to muscle memory and soft tissue pressure. It stabilizes your smile by locking teeth in their corrected position. Retainers are typically worn daily — often at night and as directed by your orthodontist depending on your specific treatment plan. Constructed using transparent thermoplastic material or a combination of plastic and thin wire, and are designed to be as unobtrusive as possible.



A nightguard, on the other hand, is a protective device meant to reduce wear from unconscious jaw clenching, commonly called nighttime teeth grinding. Bruxism erodes tooth surfaces, trigger heightened reactions to hot or cold, lead to jaw pain, 東京 前歯矯正 morning migraines, and compromise crowns or fillings. Made from substantially denser, long-lasting polymers than retainers. They act as a cushion between the upper and lower teeth that absorbs the force of grinding and protects the natural structure of the teeth.



Their primary goal is long-term tooth positioning, a nightguard is about protection and prevention of damage. Some individuals may need both a retainer and a nightguard, particularly if braces were recently removed and bruxism is present. In such cases, a dentist or orthodontist may recommend a custom nightguard that can be worn over the retainer, or may suggest a combination appliance designed to serve both functions, depending on the individual's needs.



Using the wrong appliance can cause serious consequences. Wearing a retainer to protect against grinding may not provide enough protection and could damage the retainer. Similarly, wearing a nightguard as a retainer will not hold teeth in position and could even cause shifting over time. Always consult your dentist or orthodontist to select the correct device for your oral health goals and to avoid complications from ill-fitting gear.