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Medical Studies and Research

Explore the research publications shared by Orthologics. Follow the links below to read the original sources and their findings in context.


Narrowed Jaws Impact Breathing and Facial Growth.

United States – Opperman, 2015.

Approximately 80% of orthodontic patients need arch expansion due to a narrow maxilla.

United States – Greenacre, 2020.

About 60% of children need palatal expansion due to a narrowed maxilla, linked to breathing issues.

Egypt – El-Beialy et al., 2021.

Up to 80% of children may have a narrowed palate, impacting maxillary arch form and airway health.

Recent Clinical Studies Link Sleep Apnea to Neurological Deficits in Children.

America – Kheirandish-Gozal et al., 2017

Children with sleep apnea show reduced gray matter, impacting cognitive development.

Europe – Garde et al., 2022

Sleep apnea in children is linked to reduced brain tissue volume and poorer neurocognitive performance.

China – Zhang et al., 2024

Up to 19.8% of neurobehavioral deficits in children may be linked to sleep-disordered breathing.

Poland – Chmielik et al., 2025

Sleep apnea in children is associated with neurocognitive issues, urging rapid treatment.