Is a Mandibular Advancement Splint Suitable for Me? May 27, 2026 Is a Mandibular Advancement Splint Suitable for Me? If you snore heavily or have been diagnosed with obstructive sleep apnea, you may have heard about mandibular advancement splints, also known as MAS devices. These oral appliances are becoming a popular treatment option for people looking for an alternative to CPAP therapy. But while they can work very well for the right person, they are not suitable for everyone. Understanding whether a mandibular advancement splint is right for you starts with looking closely at your oral health and jaw condition. What Is a Mandibular Advancement Splint? A mandibular advancement splint is a custom-made oral device worn during sleep. It works by gently moving the lower jaw forward to help keep the airway open overnight, often assisting in the reduction of snoring, and improving mild to moderate obstructive sleep apnea. Mandibular advancement splints are often recommended for people who want a simpler and more portable treatment option or those who cannot tolerate CPAP, which works by gently blowing air through a mask, opening the airway and eliminating symptoms. For some patients with mild to moderate sleep apnea, these devices can offer results comparable to CPAP therapy.1 Why Oral Health Matters Unlike CPAP, a mandibular advancement splint relies on your teeth and jaw for support. This means healthy teeth, gums, and jaw joints are essential before starting treatment. Because the appliance holds the lower jaw in a forward position during sleep, it can place pressure on the teeth, jaw muscles, and temporomandibular joints, commonly called the TMJ. Before being fitted for a device, your dentist or treatment consultant will usually ask questions about your dental and jaw health. This may include whether you experience: Jaw clicking, locking, or pain Previous TMJ disorder Loose teeth Gum or periodontal disease Pain when biting Extensive dental work such as crowns, bridges, or implants Current orthodontic treatment Recent dental treatment within the past six months These factors do not always rule out treatment, but they may affect whether a mandibular advancement splint is safe and comfortable for you. Who May Not Be Suitable? People with unstable dental health or significant jaw problems may not be ideal candidates for oral appliance therapy. For example, untreated gum disease or loose teeth can worsen if extra pressure is placed on the mouth during sleep. Similarly, people with severe TMJ symptoms may find the appliance uncomfortable or notice worsening jaw pain over time. If you have more severe sleep apnea symptoms such as major daytime tiredness, morning headaches, or frequent breathing interruptions during sleep, your doctor may recommend CPAP as the first treatment option. The Importance of a Professional Assessment A proper assessment is the best way to determine whether a mandibular advancement splint is suitable for you. This usually involves both a sleep assessment and a detailed dental examination to ensure your teeth, gums, and jaw can safely support the device. If you snore, wake feeling unrefreshed, or suspect you may have sleep apnea, speak with your doctor, dentist, or sleep clinic. Early assessment and treatment can make a significant difference to your sleep quality, energy levels, and overall health. References 1 “RACGP - Mandibular Devices for Obstructive Sleep Apnoea.” Racgp.org.au, 2018, www.racgp.org.au/clinical-resources/clinical-guidelines/handi/handi-interventions/device/mandibular-devices-for-obstructive-sleep-apnoea.
