# Oral Appliance Therapy and Inspire: CPAP Alternatives

If you can't tolerate CPAP, a custom oral appliance or hypoglossal nerve stimulation (Inspire) can treat obstructive sleep apnea; each has specific eligibility criteria and insurance rules.

Updated 2026-10-28. Also on the [web page](https://sleepstudies.fyi/guides/oral-appliance-therapy-and-inspire-alternatives).

CPAP is the most effective treatment for obstructive sleep apnea, but only if you use it. If you've genuinely tried and can't tolerate it, there are proven alternatives.

## Oral appliance therapy

A **mandibular advancement device** is a custom mouthpiece that holds the lower jaw slightly forward to keep the airway open.

- **Who it suits:** adults with mild to moderate OSA, or those with any severity who can't tolerate CPAP, per AASM and AADSM guidance.
- **Made by:** a dentist trained in dental sleep medicine, based on a physician's diagnosis and prescription.
- **Adjustment:** the device is advanced gradually, then a follow-up sleep test confirms it works.
- **Coverage:** often billed to medical insurance, not dental. Medicare covers custom devices (E0486) through enrolled DME suppliers.
- **Side effects:** jaw soreness, tooth movement, bite changes.

## Hypoglossal nerve stimulation (Inspire)

Inspire is an implanted device that stimulates the nerve controlling the tongue, moving it forward with each breath during sleep.

**Typical eligibility:**
- Moderate to severe OSA (AHI roughly 15–100)
- CPAP failure or intolerance
- BMI limits set by labeling and payer policy (many insurers still use 32–35)
- A drug-induced sleep endoscopy (DISE) showing no complete concentric collapse at the soft palate
- Adults, with an indication for adolescents with Down syndrome

The procedure is outpatient, the device is turned on about a month later, and a titration study fine-tunes it.

## Other options

- Positional therapy for position-dependent apnea
- Weight loss, including medications now approved for OSA in adults with obesity
- Nasal or airway surgery
- Treating nasal congestion to improve CPAP tolerance

## Next steps

Document every CPAP attempt, including masks, pressure changes and duration. Insurers want that history before approving any alternative.

## Questions

### Do I need to fail CPAP before getting Inspire?

Yes. Inspire is indicated for people who have tried and failed or cannot tolerate CPAP, and insurers require documentation of that attempt.

### Are over-the-counter mouthguards the same as an oral appliance?

No. Medical guidelines recommend a custom-made, titratable appliance fitted by a qualified dentist. Boil-and-bite devices are not equivalent and are usually not covered.

### Will I need another sleep study after starting an alternative?

Usually yes. A follow-up study confirms the appliance or implant is controlling your sleep apnea at the chosen setting.