How Your Dentist Can Help Treat Sleep Apnea

Sleep apnea affects an estimated 30 million Americans, with millions more undiagnosed. The condition — characterized by repeated episodes of airway obstruction during sleep — disrupts sleep quality and is associated with cardiovascular disease, diabetes, cognitive impairment, and motor vehicle accidents. While CPAP (continuous positive airway pressure) is the most effective treatment, studies consistently show that 40% to 60% of patients abandon CPAP within a year. For this population, oral appliance therapy (OAT) — provided by a specially trained dentist — offers an evidence-based alternative.

What Is Oral Appliance Therapy?

Oral appliances for sleep apnea are custom-fitted mouthpieces worn during sleep that reposition the lower jaw (mandible) and tongue slightly forward, which opens the upper airway and prevents obstruction. The most common design is a mandibular advancement device (MAD). These devices are custom-fabricated from dental impressions or digital scans, fit precisely, and can be titrated (adjusted) over time to find the jaw position that optimally reduces apnea events.

Who Is Oral Appliance Therapy For?

Oral appliances are FDA-approved and recommended by the American Academy of Sleep Medicine (AASM) for: patients with mild to moderate obstructive sleep apnea; patients with severe sleep apnea who cannot tolerate CPAP; and as a complementary treatment used alongside CPAP. They are generally less effective than CPAP for severe sleep apnea, but effectiveness is not the only factor — a treatment the patient actually uses consistently is always preferable to one they abandon. Studies show that OAT achieves outcomes similar to CPAP when compliance differences are accounted for.

The Dental Sleep Medicine Process

The process begins with a sleep study (polysomnography or home sleep test ordered by a physician) to diagnose sleep apnea and establish its severity. The patient's physician and the dental sleep medicine provider then collaborate on the treatment plan. The dentist takes impressions or digital scans of the teeth, fabricates the custom appliance, and fits it. Follow-up appointments over 1 to 3 months fine-tune the jaw position through titration. A follow-up sleep study is typically done to verify treatment effectiveness.

Effectiveness of Oral Appliances

Studies show oral appliances reduce the apnea-hypopnea index (AHI — the number of airway obstruction events per hour) by an average of 50% in mild to moderate sleep apnea. Many patients experience complete or near-complete control of their apnea. For patients who cannot tolerate CPAP, even partial reduction of apnea events produces meaningful health benefit. Outcomes vary significantly based on anatomy, apnea severity, and appliance fitting quality.

Side Effects and Limitations

Common side effects of oral appliances include: temporary jaw soreness or muscle fatigue in the first weeks of use; increased saliva production; dry mouth; and mild bite changes over time. The bite changes (temporary changes in how teeth fit together in the morning) are a known effect of mandibular advancement and are typically transient — they resolve within 30 to 60 minutes after removing the device. Long-term changes in tooth position or bite can occur with years of use and should be monitored by the treating dentist.

Insurance Coverage for Oral Appliances

Oral appliance therapy for sleep apnea is covered by most medical insurance plans and Medicare Part B — it is billed as a medical benefit, not a dental benefit. A physician diagnosis of sleep apnea from a sleep study is required for medical insurance coverage. The dental sleep medicine provider typically handles the medical insurance billing. Out-of-pocket costs vary widely; confirm your specific plan's coverage and prior authorization requirements before proceeding.

Finding a Dental Sleep Medicine Provider

Look for dentists with training from the American Academy of Dental Sleep Medicine (AADSM) or who hold the Diplomate of the American Board of Dental Sleep Medicine (ABDSM) credential. This specialty training ensures the provider understands sleep apnea diagnosis, proper appliance selection, titration protocols, and follow-up monitoring. Not every dentist who offers oral appliances has this specialized training.

Final Thoughts

If you have sleep apnea and haven't been able to tolerate CPAP — or if you haven't been tested but experience snoring, daytime sleepiness, or morning headaches — talk to your physician and explore dental sleep medicine. Oral appliance therapy is a mature, evidence-based option that helps millions of patients sleep better and protect their long-term health.