Oral Appliance Therapy for Sleep Apnea and Snoring

Oral appliance therapy (OAT) uses a custom-fitted dental device worn during sleep to treat obstructive sleep apnea and snoring. Think of it like a sports mouthguard — but precisely calibrated to position your jaw in a way that keeps your airway open throughout the night.

How Oral Appliances Work

The most common type is a mandibular advancement device (MAD). It holds the lower jaw (mandible) slightly forward and downward — a position that tenses the muscles and tissues of the upper airway, preventing them from collapsing during sleep. Even a few millimeters of advancement can dramatically reduce or eliminate apnea events and snoring. The exact amount of advancement is calibrated over several adjustment visits until optimal effectiveness is achieved without causing jaw discomfort.

Who Is a Candidate?

• Mild to moderate obstructive sleep apnea (AHI of 5–30 events/hour)
• Severe OSA patients who cannot tolerate CPAP (used after discussion with a sleep physician)
• Primary snoring without apnea
• Adequate remaining teeth or dental implants to anchor the appliance

The Fitting Process

Your dentist takes impressions or digital scans of your teeth. A dental laboratory fabricates the custom appliance. At the delivery visit, the appliance is adjusted and a protocol for gradual advancement is established. Follow-up sleep testing confirms effectiveness — it's not enough to just feel better; objective data confirms the apnea is adequately controlled.

Side Effects and Management

Common and generally manageable side effects include: jaw soreness (especially initially), tooth soreness, dry mouth, and excessive salivation. Morning jaw exercises help counteract any temporary bite changes. Bite changes from long-term use are a consideration and are monitored by your dentist. Significant bite shift, while uncommon with proper monitoring, is a reason some patients eventually transition to other therapies.

How It Compares to CPAP

For mild to moderate OSA, research shows oral appliances achieve outcomes comparable to CPAP — with dramatically higher nightly use (patients actually wear them). For severe OSA, CPAP provides greater oxygen saturation improvement. The best therapy is the one you will actually use consistently.