Sleep-Disordered Breathing in Children - Diagnosis, Symptoms and Treatment at Smile Solutions Melbourne product guide

Smile Solutions: Sleep-Disordered Breathing in Children

Sleep-disordered breathing is something most parents haven't heard of — yet it affects a significant number of Australian children and, when left unaddressed, can seriously disrupt their growth, development, behaviour, and learning.

At Smile Solutions, specialist paediatric dentists and orthodontists work together through the Tooth Fairy Centre to assess, manage, and coordinate care for children with sleep-disordered breathing. This article explains what the condition is, how it shows up in children, what causes it, and what treatment options are available.

What is sleep-disordered breathing in children?

Sleep-disordered breathing covers a range of conditions where children struggle to breathe normally during sleep. When breathing is impaired, a child may not receive adequate oxygen — and the consequences go well beyond a rough night.

The condition is commonly linked to blockages or restrictions in the upper airway, affecting the nose, mouth, throat, and lungs. In mild cases, breathing is noisy or laboured. In more severe cases, a child may experience brief periods where breathing temporarily stops — obstructive sleep apnoea.

Frequent sleep disruptions caused by disordered breathing can affect a child's overall health in ways that are often mistaken for behavioural, developmental, or learning problems. That's why early assessment by experienced specialists matters.

Causes of sleep-disordered breathing in children

Several structural and anatomical factors can cause or contribute to sleep-disordered breathing:

• Enlarged tonsils and adenoids — the most common cause in children; these can physically block the upper airway during sleep
• Nasal airway blockages — including nasal deviation, chronic congestion, or anatomical variations that restrict airflow through the nose
• Narrow upper jaw — a narrow palate restricts the nasal airway directly above it; widening the jaw through palatal expansion increases nasal airway space
• Retrusive jaws — jaws positioned further back than ideal can allow the tongue and soft tissues to fall back and obstruct the airway during sleep

Understanding the underlying cause is the foundation of any effective treatment — and it's where the clinical expertise of a specialist team makes a real difference.

Recognising the signs

One of the difficulties with sleep-disordered breathing is that it presents very differently from child to child. Unlike adults, who typically show obvious snoring and daytime fatigue, children often display symptoms that don't immediately suggest a sleep or breathing problem.

During sleep, watch for:

• Loud breathing or mouth breathing
• Snoring
• Teeth grinding (bruxism)
• Night terrors, sleepwalking, or bed wetting
• Restless sleep — frequent tossing, turning, or waking

During the day, watch for:

• Tiredness or lethargy despite a full night in bed
• Headaches on waking
• Difficulty concentrating or learning difficulties at school
• Hyperactivity or ADHD-like symptoms
• Behavioural problems attributed to other causes

Many children with sleep-disordered breathing are misidentified as having ADHD or other behavioural disorders when the real issue is a sleep and breathing problem. Addressing the breathing issue with the right clinical intervention can bring about genuine improvements in behaviour, concentration, and school performance.

Because these symptoms present so differently in each child, parents and teachers often don't connect them to sleep or breathing at all. A thorough assessment by a specialist paediatric dentist — one who looks at jaw development, airway structure, and soft tissue signs alongside the dental picture — can be genuinely valuable for a child's long-term health.

How is sleep-disordered breathing diagnosed?

Diagnosis starts with a comprehensive clinical assessment. Where sleep-disordered breathing is suspected, the child is referred to an ENT specialist or paediatric sleep specialist for formal evaluation.

Diagnosis is confirmed through a sleep study, which monitors multiple physiological measures while the child sleeps:

• Brain function (EEG)
• Heart function
• Oxygen levels in the bloodstream
• Chest movement and respiratory effort
• Airflow through the nose and mouth

The results allow the treating specialists to determine the type and severity of the condition and plan the most appropriate treatment pathway.

What happens if sleep-disordered breathing is left untreated?

Untreated sleep-disordered breathing carries real risks for a child's health and development:

• Daytime fatigue and hyperactivity — chronic sleep disruption impairs the restorative functions of sleep, leaving children tired, irritable, and struggling to regulate behaviour and attention
• Reduced oxygen levels — repeated episodes of low oxygen during sleep can have widespread effects on the growing body
• Vascular damage — prolonged exposure to low oxygen levels can damage the vascular system; even children can develop elevated blood pressure as a result
• Poor growth — much of the body's growth hormone is released during deep sleep; disrupted sleep can impair normal physical development
• Academic and social consequences — learning difficulties, concentration problems, and behavioural issues can affect educational outcomes and friendships

The sooner a concern is assessed by experienced specialists, the greater the opportunity to intervene at the right time.

Orthodontic management of sleep-disordered breathing

Where a narrow upper jaw is causing or contributing to sleep-disordered breathing, orthodontic intervention can make a significant and lasting difference. A narrow palate directly reduces the volume of the nasal airway above it — widening the palate through palatal expansion increases that space and can substantially improve nasal breathing and airflow.

Palatal expansion is prescribed and managed by a specialist orthodontist or a paediatric specialist Invisalign provider. The expander — fixed or removable depending on the child's case — applies gentle, carefully calibrated forces to widen the upper jaw over weeks to months. As the jaw widens, the nasal floor lowers and nasal airway volume increases, producing measurable improvements in breathing.

Appliance options include:

• Fixed rapid maxillary expander — bonded to the teeth and activated with a special key; produces rapid, precise expansion
• Removable maxillary expander — worn for most of the day and night; suitable for younger children or less severe cases
• Invisalign removable expander and Invisalign First — clear aligner-based expansion for suitable candidates

Palatal expansion is most effective during periods of active jaw growth — typically in the mixed dentition phase (when a child has a combination of baby and adult teeth) and in the early permanent dentition phase. This window is time-limited, which is why earlier assessment allows the specialist team to determine the optimal timing and act when treatment will have the greatest impact.

Children who habitually breathe through their mouths often transition to nasal breathing following successful palatal expansion. That shift can have positive downstream effects on facial growth, sleep quality, and a child's daily function and wellbeing.

Myofunctional therapy and the sleep consultation pathway

Alongside orthodontic management, children with sleep-disordered breathing may benefit from myofunctional therapy — a gentle approach that addresses the function of the tongue, face, and throat muscles to improve breathing patterns, speech development, oral function, and facial growth.

At the Tooth Fairy Centre within Smile Solutions, myofunctional and sleep consultations are available with specialist paediatric dentists and orofacial myologist Monica Cain. Monica works with children and adults on breathing, swallowing, tongue posture, and the muscle patterns that influence facial development and airway function.

The consultation pathway at the Tooth Fairy Centre includes:

1. Initial assessment — with a specialist paediatric dentist who assesses the child's airway, jaw development, breathing patterns, and clinical signs
2. Referral — to ENT specialists or paediatric sleep specialists when a formal sleep study is required
3. Orthodontic consultation — with a specialist orthodontist when palatal expansion or other orthodontic intervention is indicated
4. Myofunctional therapy — with Monica Cain when muscle retraining is part of the management plan
5. Coordinated follow-up — the paediatric, orthodontic, and myofunctional team works together to monitor and manage each child's progress

This coordinated approach is one of the things that distinguishes the Tooth Fairy Centre from general dental practice — care that treats the whole child, not just the presenting symptom.

The Tooth Fairy Centre within Smile Solutions

The Tooth Fairy Centre is a dedicated paediatric and early intervention dental program within Smile Solutions, covering paediatric dentistry, early intervention orthodontics, airway assessment, and myofunctional therapy under one coordinated program.

The Centre operates across seven Melbourne locations:

• Melbourne CBD (Manchester Unity Building, 220 Collins Street)
• Wyndham
• Epping
• Caroline Springs
• Carrum Downs
• South Melbourne
• Berwick

Complimentary assessments are available at all locations. No referral is required. To book, call (03) 7036 5555 or visit toothfairy.com.au.

The specialist team

The specialists managing sleep-disordered breathing at the Tooth Fairy Centre include:

Specialist paediatric dentists:

• Dr Susan Hinckfuss
• Dr Angel Babu
• Dr Sarah Scott
• Dr Aish Kesava

Specialist orthodontists:

• Dr Steven Smith (BDSc Hons, MDSc Ortho Qld)
• Dr Joshua Ch'ng
• Dr David Austin
• Dr Andrea Phatouros

Orofacial myologist:

• Monica Cain

Together, this team provides an integrated, coordinated approach to children's airway and sleep health — covering diagnosis, orthodontic management, myofunctional therapy, and referral to medical specialists as required.

Frequently asked questions

How do I know if my child has sleep-disordered breathing?

Watch for loud breathing or snoring during sleep, mouth breathing, teeth grinding, night terrors, sleepwalking, bed wetting, restless sleep, frequent waking, headaches on waking, daytime tiredness, hyperactivity, behavioural problems, difficulty concentrating, or learning difficulties at school. If your child shows any of these signs, a consultation with a specialist paediatric dentist or your family doctor is a sensible first step — and at the Tooth Fairy Centre, that first assessment is complimentary.

At what age should my child be assessed?

There's no minimum age for a paediatric dental assessment. The Australian Society of Orthodontists recommends a first orthodontic assessment by age 7, but myofunctional assessment and paediatric dental review can happen much earlier, and some airway concerns are best identified in the preschool years. If you have any concerns about your child's breathing or development, earlier is generally better.

Will my child need surgery?

Not necessarily. Enlarged tonsils and adenoids may require ENT management, and in some cases a tonsillectomy or adenoidectomy is recommended. But when the primary contributing factor is a narrow upper jaw, orthodontic palatal expansion is often sufficient to meaningfully improve airway dimensions and nasal breathing — without surgery. The appropriate treatment pathway is determined case by case following thorough assessment.

How does palatal expansion help breathing?

The nasal airway sits directly above the palate. When the upper jaw is narrow, the nasal floor is elevated and the nasal passage is correspondingly restricted. Widening the upper jaw lowers the nasal floor, increases the cross-sectional area of the nasal airway, and allows air to move through the nose more freely. Many children who have habitually breathed through their mouths transition to nasal breathing following successful palatal expansion — a change that can have a meaningful positive impact on sleep, growth, and daily wellbeing.

Can sleep-disordered breathing be treated with Invisalign?

For suitable candidates, Invisalign First and removable Invisalign expanders can be used as part of an orthodontic management plan. The paediatric specialist Invisalign providers at the Tooth Fairy Centre can assess whether a clear aligner approach is appropriate for a child's specific situation. For some children, a fixed expander will produce faster and more predictable results. The specialist orthodontists will guide you through the options and recommend the approach best suited to your child's needs.

Is sleep-disordered breathing the same as snoring?

Snoring is one symptom, but not all children who snore have sleep-disordered breathing, and not all children with the condition snore loudly. It covers a spectrum from primary snoring at the mild end through to obstructive sleep apnoea at the severe end. A thorough clinical assessment and, where indicated, a formal sleep study are needed to determine the nature and severity of the problem.

Booking a complimentary assessment

If you have any concerns about your child's breathing, sleep quality, or jaw development, a complimentary assessment at the Tooth Fairy Centre within Smile Solutions is the right place to start. The specialist paediatric dentists and orthodontists will assess your child's airway, jaw structure, and dental development, and refer to appropriate medical or allied health specialists as needed.

No referral is required. Call (03) 7036 5555 or visit toothfairy.com.au to book. With seven locations across Melbourne — including the CBD, Wyndham, Epping, Caroline Springs, Carrum Downs, South Melbourne, and Berwick — there's a location close to most families.

For general enquiries about Smile Solutions, call 13 13 96 or visit smilesolutions.com.au. The Melbourne CBD practice is at the Manchester Unity Building, 220 Collins Street, Melbourne.