If you’ve been diagnosed with sleep apnea, you’ve likely heard about both CPAP machines and oral appliances. Both work. Both have trade-offs. The right choice depends on your apnea severity, your tolerance, and your lifestyle.
Here’s a clear-eyed comparison from our sleep dentistry team in Dansville.
How each one works
CPAP (Continuous Positive Airway Pressure)
A bedside machine pumps a steady stream of pressurized air through a hose into a mask over your nose (or nose and mouth). The pressure holds your airway open all night. Highly effective when used.
Oral appliance (Mandibular Advancement Device)
A custom-made dental appliance that fits over your teeth and gently shifts your lower jaw forward during sleep. The forward jaw position keeps soft tissue from collapsing into the airway. Quiet, simple, portable.
Side-by-side
| Factor | CPAP | Oral Appliance |
| Best for | Severe apnea (most cases) | Mild-to-moderate apnea |
| Effectiveness when used | Highest — eliminates almost all events | High — significantly reduces events |
| Compliance rate | 30-60% | ~80% |
| Comfort | Variable; many struggle | Generally well-tolerated |
| Travel | Bulky; needs power | Pocket-sized |
| Noise | Some hum from machine | Silent |
| Effect on partner | Some find machine annoying | Often improves their sleep too |
| Cost | $500-$3,000 (often insurance covered) | $1,500-$3,000 (often insurance covered) |
| Maintenance | Filters, water, tubing weekly | Simple cleaning daily |
The compliance reality
The single biggest factor here isn’t theoretical effectiveness — it’s whether you’ll actually use the treatment every night.
- CPAP is theoretically the most effective treatment, but compliance rates run as low as 30%. Many patients struggle with the mask, the hose, the noise, the sensation of pressure. A perfectly effective machine that sits in the closet does nothing for you.
- Oral appliances are slightly less effective per night but compliance rates are much higher (~80%). For many patients with mild-to-moderate apnea, a less powerful treatment used every night beats a stronger treatment used 3 nights a week.
When CPAP is the right call
- You have severe sleep apnea (AHI over 30)
- You’re tolerating it well, even with adjustments
- You have central sleep apnea (oral appliances don’t work for that)
- You’ve tried oral appliance therapy and didn’t get sufficient improvement
When an oral appliance is the right call
- You have mild-to-moderate apnea (AHI under 30)
- You’ve tried CPAP and can’t tolerate it
- You travel frequently and need something portable
- You sleep with a partner who’s affected by CPAP noise
- You want a discreet, simple option
- You have a positional component to your apnea
Can you use both?
Some patients combine treatments. CPAP at home, oral appliance for travel. Or CPAP nightly with an oral appliance as backup for nights it isn’t tolerated. Combination therapy isn’t unusual for patients with moderate apnea.
What about lifestyle changes alone?
Weight loss, side-sleeping, avoiding alcohol before bed, and quitting smoking can significantly reduce apnea severity. For mild cases, sometimes lifestyle alone is enough. For most diagnosed cases, lifestyle changes are an important addition to a treatment device — not a replacement.
Insurance and cost
Both treatments are typically covered by medical insurance (not just dental insurance) when sleep apnea has been diagnosed via a sleep study. Coverage levels vary. We help patients navigate the medical-billing side and verify benefits before treatment starts.
What our process looks like
- Confirm your sleep apnea diagnosis (need a recent sleep study)
- Examine your teeth, jaw, and bite to confirm you’re a good candidate
- Take impressions or a digital scan
- Custom appliance is fabricated and delivered (usually 2-3 weeks)
- Fitting appointment with adjustment to dial in the optimal jaw position
- Follow-up sleep study to confirm the appliance is working
- Periodic check-ins to ensure continued effectiveness
Want to discuss your options?
If you’ve been diagnosed with sleep apnea or you’re CPAP-intolerant, schedule a consultation at A Smile By Design or call (585) 335-2120. We’ll review your sleep study, discuss your options honestly, and tell you whether oral appliance therapy is a good fit.