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Do Sleep Apnoea Mouth Guards Really Work? Pros and Cons for Patients

Posted By  
30/05/2025
12:00 PM

 

Do sleep apnoea mouth guards really work? The simple answer is yes. For many people with mild to moderate obstructive sleep apnoea (OSA), these devices effectively reduce symptoms by keeping the airway open during sleep. A sleep apnoea mouth guard, also known as a mandibular advancement device (MAD), works by gently repositioning the lower jaw and tongue to improve airflow.

This article explores how sleep apnoea mouthguards work, their benefits and limitations, and how Australian patients can access the right treatment. It also answers common questions to help you make an informed decision about this non-invasive therapy option.

What Is a Sleep Apnoea Mouth Guard?

A sleep apnoea mouth guard is a custom or semi-custom oral device designed to treat obstructive sleep apnoea by maintaining an open airway during sleep.

Key Features

  • Worn inside the mouth overnight

  • Moves the lower jaw slightly forward

  • Prevents the tongue and soft tissues from blocking the airway

Types of Mouthguards

  • Custom-fitted devices: Crafted by dentists using dental impressions for optimal fit and comfort

  • Boil-and-bite devices: Semi-custom, moulded by the patient after softening in hot water

  • Over-the-counter devices: Generally less effective and not recommended for serious OSA treatment

How Does a Sleep Apnoea Mouth Guard Work?

Obstructive sleep apnoea happens when throat muscles relax excessively and block airflow during sleep. A sleep apnoea mouth guard helps by:

  • Advancing the lower jaw forward to increase airway space

  • Preventing the tongue from falling back and obstructing breathing

  • Reducing airway vibration that causes snoring

This mechanical repositioning improves airflow, reducing breathing pauses and improving sleep quality.

Effectiveness of Sleep Apnoea Mouth Guards

For many people with mild to moderate OSA, sleep apnoea mouthguards have proven to be effective. Key points include:

  • Reduction in apnoea events: Studies show a 30-60% reduction in apnoea-hypopnea index (AHI) with proper device use.

  • Improved symptoms: Less snoring, better sleep quality, and reduced daytime sleepiness.

  • CPAP alternative: Suitable for patients who cannot tolerate CPAP (Continuous Positive Airway Pressure) therapy.

It is important to note that mouthguards are less effective for severe OSA, where CPAP or other medical interventions may be necessary.

Pros of Using a Sleep Apnoea Mouthguard

  • Non-invasive: Easy to use compared to CPAP machines or surgery.

  • Portable and quiet: Small, travel-friendly device without noise or bulky equipment.

  • Comfort: Custom devices are tailored for better fit and less discomfort.

  • Cost-effective: Usually less expensive than CPAP machines; may be covered by Australian private health insurance.

  • Improves quality of life: Reduces snoring and daytime fatigue, improving overall wellbeing.

Cons and Limitations

  • Not a cure: Mouthguards manage symptoms but do not eliminate the condition.

  • Less effective for severe cases: Severe sleep apnoea often requires CPAP or surgery.

  • Side effects: Possible jaw soreness, tooth discomfort, dry mouth, or excessive saliva.

  • Adjustment period: May take several nights or weeks to get used to wearing the device.

  • Professional fitting required: Poor fit can reduce effectiveness or cause discomfort.

How to Get a Sleep Apnoea Mouth Guard in Australia

Step 1: Confirm Diagnosis

A sleep study conducted by a sleep physician or respiratory specialist is essential to diagnose sleep apnoea and determine severity.

Step 2: Specialist Referral

Consult a dentist trained in sleep medicine to evaluate suitability for a mandibular advancement device.

Step 3: Custom Fitting

Custom devices are recommended for comfort and effectiveness, crafted from dental impressions taken at your clinic.

Step 4: Follow-Up

Regular check-ups ensure proper fit and adjust the device if necessary to maximise benefits.

Step 5: Insurance and Costs

Check with your private health fund regarding partial coverage for custom oral appliances.

Frequently Asked Questions (FAQs)

Can a mouth guard cure sleep apnoea?

Mouthguards do not cure sleep apnoea but can significantly reduce symptoms by keeping the airway open during sleep.

How long do mouth guards last?

A well-maintained custom sleep apnoea mouthguard typically lasts 2 to 5 years before needing replacement.

Is it comfortable to sleep with a mouth guard?

Many patients find custom-fitted devices comfortable after an initial adjustment period. Mild side effects like jaw stiffness or excessive saliva often resolve quickly.

Conclusion

Sleep apnoea mouthguards provide an effective, non-invasive treatment option for many Australians with mild to moderate obstructive sleep apnoea. While not a cure, they improve breathing during sleep, reduce snoring, and enhance daytime alertness.

If you struggle with CPAP or are newly diagnosed, consult a dental sleep specialist to discuss whether a custom mandibular advancement device is right for you.

For expert fitting and personalised advice, visit Tooth Heaven.