Airway orthodontics

Airway orthodontics, or airway-aware orthodontics, means planning orthodontic treatment with attention to how a patient breathes and sleeps, not only how the teeth line up. It is a defining focus at myORTHODONTIST, and it rests on a simple observation: the jaws are the walls and floor of the airway, so how they grow shapes how a person breathes for life. This page sets out what the published research shows, how the clinic uses it, and how orthodontic care fits with the child's physician and ENT. The relationship between orthodontic treatment and breathing is patient-specific, which is why every assessment at the clinic includes the airway.

What the research shows

• The jaws and the airway grow together. Mouth breathing, low tongue posture and a narrow upper jaw feed one another during childhood growth, and the resulting long, narrow face and high palate are recognised contributors to sleep-disordered breathing. Sleep-medicine researchers have argued for exactly this reason that the earlier these patterns are recognised and treated, the better (Guilleminault 2017).
• Widening the upper jaw improves nasal breathing. The roof of the mouth is the floor of the nose. An umbrella review of eleven systematic reviews found significant and stable increases in nasal and throat airway volume, and lower airway resistance, after rapid palatal expansion in growing children (Garrocho-Rangel 2023). An earlier systematic review reached the same conclusion using direct measurements of nasal airflow and resistance, with results stable at follow-up (Baratieri 2011).
• In children with a narrow upper jaw and sleep apnea, expansion reduces the apnea itself. A meta-analysis of 17 studies covering 314 children found the apnea-hypopnea index fell by about 70 percent on average after expansion, with oxygen levels during sleep improving as well (Camacho 2017). A separate systematic review and meta-analysis of interceptive orthodontic treatment confirmed significant reductions in apnea events immediately after expansion and at six and twelve months (Bucci 2022). In one clinical series, 85 percent of children responded, and those treated soon after symptoms began responded best (Villa 2015).
• The benefit lasts. Children treated with expansion for sleep apnea and followed for twelve years, into their early twenties, still had normal sleep studies and a stable, wider upper jaw (Pirelli 2015).
• Guiding a set-back lower jaw forward helps too. Reviews of mandibular advancement appliances in growing children report reductions in apnea events, improved sleep quality and better oxygen saturation, particularly when combined with expansion in the right patient (Li 2025) (Sun 2024) (Bucci 2022).
• Expansion and ENT care work best together. Adenotonsillectomy remains the first-line treatment for most childhood sleep apnea, and studies that combine it with orthodontic expansion show the strongest results (Villa 2014). Children who keep mouth breathing after tonsil surgery are at risk of the problem returning, which is one reason orthodontic and myofunctional follow-up matters (Lee 2015).
• Adults benefit as well. Skeletal expansion in adults reduced apnea events by roughly 59 percent across pooled studies (Abdullatif 2016), and surgical advancement of both jaws, planned with orthodontics, improved 99 percent of patients in a meta-analysis of 518 cases, with an average 80 percent reduction in apnea events (Zaghi 2016).

Sleep apnea itself is a medical diagnosis, made by a physician, usually with a sleep study. The American Association of Orthodontists' white paper on obstructive sleep apnea describes the orthodontist's role as screening, referring, and treating the dental and skeletal contributors in coordination with the medical team. In growing children, those skeletal contributors are often exactly what orthodontics is best placed to change, and the research above is why this clinic takes that role seriously.

How the clinic uses this

• Screen every child. A few questions about snoring, sleep and breathing, plus a look at the tonsils, palate, tongue posture and facial pattern, take two minutes and are part of every assessment at this clinic.
• Refer, and work alongside. Children with signs of sleep-disordered breathing are referred to their family physician, and often to an ENT specialist, before or alongside orthodontic treatment. The two pathways are complementary, not competing (Villa 2014).
• Expand a narrow upper jaw at the age when the mid-palatal suture still opens easily, usually before 12 to 14. After that an adult needs MARPE or SARPE. Widening the palate widens the nasal floor, creates room for the teeth, and in a child who also snores or mouth breathes, the breathing benefit is one of the primary reasons to treat (Camacho 2017) (Garrocho-Rangel 2023).
• Guide jaw growth with functional appliances, including the twin block and Invisalign with mandibular advancement, in children whose lower jaw sits far back. Bringing the lower jaw forward carries the tongue forward with it and enlarges the space behind it (Li 2025). Setting the jaw foundation correctly during growth is central to the clinic's approach and is also the best chance of avoiding extractions or jaw surgery later.
• Plan every case airway-aware. Retracting the front teeth far back or over-narrowing arches can reduce tongue space. Airway-aware planning weighs this in every patient, whether or not breathing was the reason they came in.
• In adults, oral appliances that hold the lower jaw forward are an accepted treatment for mild to moderate sleep apnea and for people who cannot tolerate CPAP, prescribed after a physician's diagnosis. Skeletal expansion and surgical jaw advancement, both planned with orthodontics, are options when the jaws themselves are the cause (Abdullatif 2016) (Zaghi 2016).

Working with your physician

Orthodontics does not replace a sleep study; it adds something a sleep study cannot, which is the ability to change the structures around the airway while a child is growing. Which children and adults benefit most is individual: a child with a narrow palate who snores and mouth breathes is the clearest candidate, while a child who mouth breathes from allergies with a normal palate needs allergy management first. That is why the clinic assesses each patient rather than applying one plan to everyone, and why treatment is coordinated with the family physician, ENT and, where needed, sleep medicine. What airway-aware care offers is earlier recognition, the right referrals, and treatment of the jaw foundation at the age when it works best.

Signs worth mentioning at an assessment

• Snoring more than occasionally, or pauses in breathing during sleep
• Mouth open at rest, especially during the day
• Restless sleep, sweating, unusual positions, bedwetting past age 6 or 7
• Difficulty waking, daytime tiredness, or hyperactivity and attention difficulties
• Frequent colds, allergies, chronic stuffy nose
• Teeth grinding, dark circles under the eyes, a long narrow face, gummy smile

Where to read more

Sleep and breathing orthodontics covers assessment and treatment pathways for children and adults. Mouth breathing in children and snoring in kids is not normal are written for parents. Dr. Kanani's broader work on airway-aware practice is at airwayorthodontics.ca.