Oral Appliance Therapy

What Is Oral Appliance Therapy?

Oral appliance therapy is a clinically proven treatment for obstructive sleep apnea and chronic snoring. It uses a custom-fitted dental device — similar in size and shape to a sports mouthguard or orthodontic retainer — to hold your lower jaw and tongue in a forward position while you sleep. This gentle repositioning prevents the soft tissues in the back of the throat from collapsing and blocking your airway, allowing you to breathe freely throughout the night.

At Glendale Dental Wellness, Dr. Ivan Chan provides custom oral appliances as a comfortable, non-invasive alternative to CPAP machines. Unlike generic over-the-counter snoring devices found in pharmacies, a professionally fabricated oral appliance is designed from precise impressions or digital scans of your teeth. This ensures an accurate fit, even pressure distribution, and the ability to make fine adjustments over time so that the device remains effective and comfortable.

The American Academy of Sleep Medicine recommends oral appliance therapy as a first-line treatment for mild to moderate obstructive sleep apnea and as an alternative for patients with severe sleep apnea who are unable to tolerate CPAP. If you have been diagnosed with sleep apnea or suspect you may have it, oral appliance therapy may be the solution that finally lets you — and your household — sleep soundly.

How Oral Appliances Work

During sleep, the muscles that support the soft palate, tongue, and surrounding tissues naturally relax. In people with obstructive sleep apnea, this relaxation allows the airway to narrow or close entirely, causing repeated pauses in breathing that can occur dozens or even hundreds of times per night. Each pause triggers a brief arousal as the brain signals the body to resume breathing, fragmenting sleep and reducing oxygen levels in the blood.

An oral appliance addresses this problem through mandibular advancement — gently holding the lower jaw (mandible) a few millimeters forward of its resting position. This forward shift pulls the tongue base and connected soft tissues away from the back of the throat, physically widening the airway space. With the airway held open, air flows freely, snoring diminishes or stops, and the cycle of oxygen drops and micro-awakenings is interrupted.

The degree of jaw advancement is precisely calibrated by Dr. Chan. Too little advancement may not resolve the obstruction; too much can cause unnecessary jaw strain. Custom devices feature a titration mechanism — typically a small screw or sliding component — that allows the position to be adjusted in sub-millimeter increments until the ideal balance of airway opening and comfort is reached.

Types of Oral Appliances

There are two primary categories of oral appliances used in sleep medicine:

Mandibular Advancement Devices (MADs)

MADs are the most widely prescribed type of oral appliance for sleep apnea. The device consists of upper and lower trays that snap over your teeth, connected by a mechanism that holds the lower jaw in a forward position. Modern MADs allow lateral (side-to-side) jaw movement and some degree of mouth opening so you can drink water or speak briefly without removing the device. Dr. Chan prescribes FDA-cleared MADs that have been validated in clinical studies for safety and effectiveness.

Tongue Retaining Devices (TRDs)

Tongue retaining devices use a soft suction bulb at the front of the device to hold the tongue in a forward position, preventing it from falling back into the airway. TRDs do not reposition the jaw itself, which makes them an option for patients who have fewer natural teeth, wear dentures, or experience TMJ discomfort that makes mandibular advancement impractical. TRDs are less commonly prescribed than MADs but can be effective in the right situation.

During your consultation, Dr. Chan will evaluate your oral anatomy, tooth and jaw health, tongue size, and sleep study results to recommend the type of appliance best suited to your needs.

The Fitting Process at Glendale Dental Wellness

Getting a custom oral appliance involves several straightforward steps:

1. Initial consultation and evaluation — Dr. Chan reviews your sleep study results (or refers you for sleep apnea diagnosis and testing if you have not yet been evaluated), examines your teeth, gums, jaw joints, and airway, and discusses your symptoms and treatment goals. This visit also includes a review of any signs and symptoms you have been experiencing.
2. Impressions or digital scanning — Precise records of your upper and lower teeth are captured using digital intraoral scans or traditional dental impressions. A bite registration records how your upper and lower jaws relate to each other. These records are sent to a specialized dental laboratory for appliance fabrication.
3. Appliance fabrication — The laboratory manufactures your custom oral appliance using medical-grade acrylic and metal components. Fabrication typically takes two to three weeks.
4. Fitting appointment — Once the appliance arrives, Dr. Chan verifies the fit, ensures it seats properly on your teeth, and sets the initial advancement position. You will practice inserting and removing the device and receive instructions on care and adjustment.
5. Titration period — Over the next several weeks, you return for a series of short appointments so Dr. Chan can gradually advance the lower jaw position. Small adjustments are made at each visit based on your symptom response and comfort. The goal is to find the minimal advancement needed to eliminate or significantly reduce apnea events and snoring.
6. Follow-up sleep testing — After the optimal setting is reached, a follow-up sleep study or home sleep test confirms that the appliance is effectively treating your sleep apnea. Dr. Chan coordinates with your sleep physician to review the results.
7. Ongoing monitoring — Dr. Chan checks your appliance fit, tooth alignment, and jaw joint health at regular intervals during your dental checkup appointments. Long-term monitoring ensures the device continues to work and that no unwanted dental changes develop.

Oral Appliance Therapy vs. CPAP: How They Compare

CPAP (continuous positive airway pressure) and oral appliance therapy are the two most common non-surgical treatments for obstructive sleep apnea. Each has distinct strengths, and understanding how they compare can help you make an informed choice with the guidance of Dr. Chan and your sleep physician.

• Comfort and wearability — CPAP requires a mask attached to a hose and air compressor. Many patients find the mask uncomfortable, restrictive, or claustrophobic. An oral appliance is a small, self-contained device with no mask, hose, or machine. Most patients find it easier to tolerate.
• Compliance rates — Effectiveness depends on consistent use. Studies show that long-term CPAP compliance hovers around 50%, meaning roughly half of patients stop using it regularly. Oral appliance compliance tends to be higher because the device is simpler and more comfortable to wear every night.
• Effectiveness — CPAP is more effective at eliminating apnea events per hour, particularly in severe cases, because it mechanically splints the entire airway open with pressurized air. Oral appliances are highly effective for mild to moderate sleep apnea and can significantly reduce the apnea-hypopnea index (AHI) even in some severe cases. Because compliance is higher with oral appliances, real-world health outcomes can be comparable for many patients.
• Portability — Oral appliances are far easier to travel with. No power supply, water reservoir, or bulky carrying case is needed. For frequent travelers, this is a major practical advantage.
• Noise — CPAP machines produce a constant hum from the air compressor. Newer models are quieter than older versions but still generate noticeable sound. Oral appliances are completely silent.
• Maintenance — CPAP requires regular cleaning of the mask, tubing, water chamber, and filter replacements. An oral appliance needs only daily brushing and periodic soaking in a cleaning solution.

It is important to be straightforward: for patients with severe obstructive sleep apnea and dangerously low oxygen levels, CPAP is generally the recommended first-line treatment. The health risks of untreated sleep apnea — including heart disease, stroke, and cognitive impairment — are serious enough that the most effective therapy should be used. However, if CPAP is not tolerable, an oral appliance is a far better option than no treatment at all.

Caring for Your Oral Appliance

Proper care extends the life of your oral appliance and keeps it hygienic:

• Daily cleaning — Each morning after removing your appliance, brush it gently with a soft toothbrush and mild, non-abrasive soap or a denture cleaner. Avoid toothpaste, which can scratch the acrylic surface and create areas where bacteria accumulate.
• Weekly soaking — Soak the appliance in an effervescent denture-cleaning tablet solution or a product recommended by Dr. Chan once or twice per week to eliminate odor-causing bacteria and mineral buildup.
• Storage — When not in use, store the appliance in its protective case in a cool, dry place. Do not leave it in direct sunlight, a hot car, or near a heat source, as high temperatures can warp the acrylic.
• Inspection — Periodically check the device for cracks, loose fittings, or worn adjustment components. If you notice any damage, contact our office before continuing to use the appliance.
• Replacement timeline — Plan to replace your oral appliance every three to five years, or sooner if wear becomes apparent. Dr. Chan evaluates appliance condition at your regular checkups.

Patients who also wear a nightguard for bruxism should discuss with Dr. Chan whether an oral appliance can serve a dual purpose or whether separate devices are needed.

Is Oral Appliance Therapy Right for You?

You may be a good candidate for oral appliance therapy if you:

• Have been diagnosed with mild to moderate obstructive sleep apnea
• Snore heavily and want a comfortable snoring treatment backed by clinical evidence
• Have tried CPAP but cannot tolerate the mask, noise, or restricted movement
• Prefer a portable, low-maintenance sleep apnea treatment for travel
• Have sufficient healthy teeth to anchor the appliance (typically at least ten teeth per arch)
• Do not have severe untreated TMJ disorders that would prevent safe jaw advancement

If you are unsure whether you have sleep apnea, review the common signs and symptoms and schedule a consultation with Dr. Chan. A proper diagnosis through sleep testing is essential before beginning any treatment. Dr. Chan will coordinate with your physician to ensure you receive the right therapy for your specific condition and severity level.

Do not ignore chronic snoring or daytime fatigue. The long-term health consequences of untreated sleep apnea affect your heart, brain, metabolism, and quality of life. Whether oral appliance therapy, CPAP, or a combination approach is right for you, the most important step is getting evaluated and starting treatment.