Snoring vs Sleep Apnoea: What’s the Difference?

Snoring is common.

In fact, many people treat it as little more than an annoyance which is often noticed more by the person beside them than by the person actually snoring.

But while snoring can sometimes be harmless, it may also be associated with a more significant condition known as obstructive sleep apnoea (OSA).

Understanding the difference matters, because sleep apnoea involves more than noise during sleep, it affects breathing itself.

What Is Snoring?

Snoring is the sound created when airflow causes soft tissues in the airway to vibrate during sleep.

This typically happens when:

• the airway narrows slightly

• muscles relax during sleep

• airflow becomes turbulent

  
  

Occasional snoring is extremely common and does not necessarily mean a person has sleep apnoea.

Common factors linked with snoring include:

• nasal congestion

• sleeping position

• alcohol consumption

• weight gain

• natural airway anatomy

What Is Obstructive Sleep Apnoea?

Obstructive sleep apnoea occurs when the airway repeatedly becomes partially or completely blocked during sleep.

Unlike simple snoring, obstructive sleep apnoea involves actual interruptions in breathing. These episodes may happen many times throughout the night and can disrupt normal sleep quality, often without the patient fully realising it.

Weight is one of the best-known risk factors for obstructive sleep apnoea (OSA), but it’s far from the only cause.

In reality, sleep apnoea is often influenced by a combination of:

• airway anatomy

• muscle tone

• jaw structure

• breathing patterns

• and underlying medical or lifestyle factors

  
  

Many patients with sleep apnoea are not significantly overweight. Here are some other causes aside from weight-gain:

1. Jaw and Airway Anatomy

The size and shape of the jaws can affect the airway during sleep.

Factors that may contribute include:

• a smaller lower jaw

• a narrow airway

• reduced space behind the tongue

  
  

During sleep, relaxed muscles can allow these already limited spaces to narrow further.

2. Enlarged Tonsils or Soft Tissue

Some people naturally have:

• enlarged tonsils

• a larger tongue

• thicker soft tissues in the throat

  
  

These structures can contribute to airway obstruction during sleep.

3. Nasal Obstruction

Difficulty breathing through the nose may increase the likelihood of sleep-disordered breathing.

Possible contributors include:

• chronic congestion

• allergies

• a deviated septum

• nasal polyps

  
  

When nasal breathing is reduced, airflow dynamics during sleep may be affected.

4. Age

As we age, muscle tone throughout the body naturally decreases — including in the airway.

This can make airway collapse during sleep more likely over time.

5. Alcohol and Sedatives

Alcohol and certain sedative medications can:

• relax airway muscles further

• reduce normal protective reflexes during sleep

  
  

This may worsen snoring and obstructive sleep apnoea in susceptible individuals.

6. Sleeping Position

Some patients experience more airway obstruction when sleeping on their back.

In this position:

• gravity may allow the tongue and soft tissues to fall backwards more easily

• narrowing the airway further during sleep

7. Genetics and Family History

Airway structure and facial anatomy are often influenced by genetics.

A family history of:

• snoring

• sleep apnoea

• or certain jaw patterns

Common Signs of Sleep Apnoea

Symptoms that may suggest obstructive sleep apnoea include:

• loud habitual snoring

• witnessed pauses in breathing

• choking or gasping during sleep

• waking unrefreshed

• daytime tiredness

• morning headaches

• poor concentration

  
  

Many patients are surprised to learn that excessive fatigue and poor sleep quality may be linked to breathing disturbances during the night.

Why Does Sleep Apnoea Matter?

Obstructive sleep apnoea is considered a medical condition, not simply a sleep habit.

Research has associated untreated OSA with increased risks of:

• high blood pressure

• cardiovascular disease

• stroke

• impaired concentration and alertness

• excessive daytime sleepiness

  
  

Because many symptoms occur during sleep itself, the condition can remain undiagnosed for years.

How Can Dentistry Help?

For selected patients, particularly those with mild to moderate obstructive sleep apnoea or significant snoring, a mandibular advancement device (MAD) may be recommended following medical assessment.

These custom-made appliances are worn during sleep and work by gently positioning the lower jaw slightly forward, which may help maintain a more open airway.

At our clinic, we use the SomnoMed Avant appliance system, designed for comfort, fit, and long-term wearability.

The Important Difference (awareness)

The key distinction is this:

Snoring

• sound caused by vibration in a narrowed airway

Obstructive Sleep Apnoea

• repeated interruptions in breathing during sleep

Not everyone who snores has sleep apnoea. But persistent snoring, particularly when associated with fatigue or witnessed breathing pauses, should not always be ignored.

Book a sleep apnoea assessment today where we can discuss your options, refer you to a specialist for diagnosis and make a long-term plan.