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CPAP and Oral Appliance Options for Sleep Apnea in Gangnam, Seoul

Medically reviewed by Dr. Kim Yoo Suk, MD · Board-certified otolaryngologist · Former professor, Yonsei & Ajou University · Consultations in English

What are CPAP and oral appliances?

Continuous positive airway pressure (CPAP) is a bedside device that delivers pressurized air through a mask over the nose or nose and mouth. The air acts as a splint that keeps the upper airway from collapsing during sleep. CPAP is the standard first-line treatment for moderate to severe obstructive sleep apnea and is highly effective when used consistently.

Oral appliances, usually mandibular advancement devices, are custom-fitted mouthguards worn at night that hold the lower jaw slightly forward. This pulls the tongue base away from the back of the throat and enlarges the airway. They are typically made by a dentist with sleep training, and the degree of jaw advancement can be adjusted gradually.

Who is each option for?

• CPAP: moderate to severe obstructive sleep apnea, or milder apnea with significant symptoms or cardiovascular risk.
• Oral appliance: primary snoring, mild to moderate sleep apnea, or people who cannot tolerate CPAP. Healthy teeth and adequate jaw movement are needed.
• Surgery: considered when a clear anatomical obstruction exists or when other options fail; see snoring surgery.
• Lifestyle measures: weight loss, side sleeping, avoiding alcohol and sedatives before bed, and regular exercise support every approach.

How we help you choose at our Gangnam clinic

Dr. Kim Yoo Suk is a board-certified otolaryngologist and former Ajou University assistant professor who published research on five-year outcomes of sleep apnea surgery and heart rate variability in sleep apnea. The clinic's evaluation, as described in its source materials, includes:

1. Polysomnography to measure apnea severity
2. A cephalogram and, when needed, CT to assess jaw and airway anatomy
3. Endoscopic examination of the nose and throat

Dr. Kim then reviews the options with you in English. Treatment choices discussed at the clinic include surgery, oral appliances, CPAP and lifestyle changes.

Nasal breathing and CPAP comfort

A blocked nose is a common reason people struggle with CPAP. Treating a deviated septum or swollen turbinates with medication or septoplasty can lower the pressure needed and make the mask more comfortable.

Limitations and side effects

CPAP only works when worn; mask discomfort, dryness, air leaks and claustrophobia are common early challenges that often improve with mask adjustment and humidification. Oral appliances can cause jaw discomfort, tooth soreness or gradual bite changes and are generally less effective for severe apnea. Neither option cures sleep apnea; symptoms return when treatment stops. Follow-up, sometimes with repeat testing, confirms effectiveness. Seek medical advice promptly if you feel drowsy while driving.

Practical information for foreign patients

If you already use CPAP from home, bring your device settings or data reports to appointments. When traveling, check voltage and airline policies for medical devices. English summaries of your evaluation are available. See Dr. Kim's profile and clinic hours.

Frequently asked questions

Is an oral appliance as good as CPAP?

CPAP is generally more effective at reducing apnea events, especially in severe cases. However, oral appliances can work well for snoring and mild to moderate apnea, and some people use them more consistently. The best treatment is one that is effective and used every night.

Can nasal surgery help me use CPAP?

Yes, for people whose nasal blockage makes CPAP uncomfortable. Correcting a deviated septum or reducing swollen turbinates can improve airflow, lower required pressure and improve comfort. It does not usually replace CPAP for significant sleep apnea.

Do I need a sleep study before getting an oral appliance?

Yes. A sleep study confirms whether you have sleep apnea and how severe it is, which determines whether an oral appliance is appropriate. Treating snoring alone without testing could miss significant apnea.

This page is general medical information written and reviewed by an ENT specialist. It is not a diagnosis or a guarantee of results; every treatment carries risks, and suitability is decided only after an examination. In an emergency in Korea, call 119.