Screening and Management of Sleep-Disordered Breathing in Children with Skeletal Anterior Open Bite
Children with skeletal anterior open bite or pronounced vertical facial growth patterns should be screened for obstructive sleep-disordered breathing through clinical assessment for snoring followed by polysomnography, and if craniofacial abnormalities are present, they should be referred for PSG before determining treatment; orthodontic intervention with rapid maxillary expansion is recommended for those with maxillary constriction and persistent OSA after adenotonsillectomy.
Screening Approach
Initial Clinical Screening
All children should be screened for habitual snoring during routine health visits, as this is the gateway symptom for sleep-disordered breathing 1.
Children with skeletal anterior open bite commonly present with vertical facial growth patterns that predispose to airway narrowing 2, 3. These patients frequently exhibit:
Polysomnography Indications
Children with craniofacial abnormalities (including skeletal anterior open bite and vertical growth patterns) who snore should be referred for polysomnography before determining treatment, as clinical diagnosis poorly predicts disease severity 1.
The American Academy of Otolaryngology guidelines specifically identify craniofacial abnormalities as a complex medical condition requiring PSG before tonsillectomy 1.
Laboratory-based polysomnography is the gold standard and should be obtained when available, as home sleep apnea testing is not recommended for children 1.
PSG is particularly important when there is discordance between physical findings (such as tonsillar size) and reported symptom severity 1.
Orthodontic Treatment Recommendations
Primary Treatment Pathway
Adenotonsillectomy remains first-line treatment when adenotonsillar hypertrophy is present 1, but up to 40% of children have persistent OSA after surgery 1.
Orthodontic Intervention for Persistent OSA
The 2024 American Thoracic Society guidelines recommend that children with persistent OSA and specific craniofacial features be considered candidates for orthodontic and dentofacial orthopedic treatment (conditional recommendation) 1.
Rapid Maxillary Expansion (RME)
RME is the preferred orthodontic therapy for children with maxillary constriction (high and narrow palate, often with posterior crossbite) 1.
RME should ideally be performed before puberty and after permanent first molars have erupted (typically 6-7 years of age) 1.
Mean improvement in apnea-hypopnea index is 3.3 events/hour (95% CI, 1.8-4.8 events/h), with oxygen saturation improving by 2.8% (95% CI, 2.3-3.5%) 1.
Meta-analysis demonstrates that orthodontic treatments including RME are effective in managing pediatric snoring and OSA 4.
Treatment Response Predictors
Initial OSA severity (AHI) is the best predictor of positive orthodontic treatment outcomes 5.
In mild OSA cases, patients with clockwise mandibular growth (increased vertical dimension) show greater improvement with bimaxillary expansion, while those with counterclockwise rotation may worsen 5.
Retrognathia with anterior growth rotation pattern may not respond well to maxillary expansion efforts 5.
Alternative Interventions
If orthodontic treatment is not feasible or fails:
Continuous positive airway pressure (CPAP) is recommended for children who do not qualify for site-specific upper airway treatment or have persistent OSA 1.
Weight loss intervention should be implemented in addition to other therapy for overweight or obese children 1.
Intranasal corticosteroids are an option for mild OSA when adenotonsillectomy is contraindicated or for mild postoperative OSA 1.
Critical Relationship: Open Bite and OSA
The connection between skeletal anterior open bite and OSA is well-established through craniofacial morphology 2, 3:
Vertical facial growth patterns common in skeletal anterior open bite are increasingly recognized as predictors of airway narrowing 2.
Children with OSA demonstrate increased mandibular plane angles and vertical facial development compared to controls 2, 3.
Oral breathing present in sleep apnea patients is responsible for different craniofacial anomalies including anterior open bite 2.
The shift from soft-tissue-centric views to recognizing skeletal/craniofacial contributors in pediatric airway risk occurred by the early 2000s 6, 2.
Post-Treatment Monitoring
All patients should be reevaluated after treatment to determine if further intervention is required 1.