Oral splint or night guard is a plastic device that is usually placed on the teeth while sleeping to prevent wear and excessive pressure. Many dentists recommend the use of oral splints to people who have had laminate or composite done. But can this device really increase the life of these treatments? The short answer is yes, but with certain conditions. In this article, we will examine the effect of using an oral splint on the lifetime of laminate and composite, how the oral splint protects aesthetic restorations, who needs it the most, and what is its relationship with **lifetime of laminate** and **lifetime of composite**. **Role of oral splint in protecting laminate and composite** 1. ### **prevention of abrasion (bruxism)** Grinding or pressing the teeth while sleeping is one of the most important causes of laminate and composite fracture or lip filling. As a protective layer, the oral splint absorbs the pressure and prevents the direct transfer of force to the restoration. 2. ### **prevention of small cracks** Even if nocturnal pressure does not result in an obvious fracture, it can create hairline cracks on the repair surface. Over time, these cracks change color and reduce strength. 3. ### **maintaining order and position of teeth** In some people, slight changes in the bite or involuntary jaw movements can affect the alignment of the laminate or composite. The oral splint helps to maintain the correct position of the teeth. **Who needs oral splints the most?** - People who suffer from **grinding teeth** or dental pressure - Those who are under a lot of stress (stress can aggravate bruxism) - Patients who feel pressure or sensitivity in their teeth after laminate or composite - People who sleep with their mouth open at night and experience dry mouth (dryness can damage the restorations) **Correlation of oral splint with length** **laminate life** The lifetime of laminate is usually between 10 and 15 years, but mechanical factors such as teeth grinding can greatly reduce this number. Continuous use of the oral splint at night takes the pressure off the laminate veneers and reduces the possibility of them breaking or filling. It also prevents discoloration caused by small cracks. **Correlation of oral splint with length** **composite life** The lifetime of composite is 5 to 7 years on average, but in people who have a lot of pressure on their teeth, this period may be shorter. Oral splints can increase this period of time by preventing wear and tear. Especially in veneer composites that have a thin layer, the role of splint is more prominent. ### **Important points in using oral splint** 1. **Made to order by a dentist** Ready-made splints may not fit well on the teeth and may even cause unwanted pressure. The best option is custom splints that are made based on the mouth mold. 2. **daily cleaning** Washing the splint after each use and weekly disinfection prevents the growth of bacteria and bad odor. 3. **Periodic examination by a dentist** Every six months, the splint should be checked for wear or deformation. 4. **Timely repair or replacement** If cracks or deformation are observed, the splint should be replaced to maintain its effectiveness. ### **Is an oral splint a substitute for other care?** no Using a mouth splint is only one of the protective methods. You should also: - Avoid eating very hard or sticky foods - Maintain oral hygiene with a soft toothbrush and appropriate toothpaste - Take periodic dental examinations seriously. ### **Summary** Oral splint is a simple but very effective tool to increase **laminate lifespan** and **composite lifespan**. By preventing excessive pressure, wear and tear, this appliance can help preserve the beauty of your smile for years. If you have had laminate or composite done and have a history of teeth grinding or tooth pressure, consulting a dentist to make a custom mouth splint can be a smart investment.