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Effects of simulated arch constriction on upper airway function during sleep.
The Angle Orthodontist
|March 18, 2026
Summary
Simulated dental arch constriction did not alter airway function during sleep. This study found no significant changes in respiratory event index or oxygen desaturation index with appliance use.
Area of Science:
- Dental Sleep Medicine
- Respiratory Physiology
Background:
- Dental arch constriction is a common condition.
- Its impact on airway function during sleep is not fully understood.
Purpose of the Study:
- To investigate the effects of simulated severe dental arch constriction on airway function during sleep.
- To assess changes in respiratory event index (REI) and oxygen desaturation index (ODI).
Main Methods:
- A pilot, single-blinded, randomized cross-over trial involving 34 participants.
- Participants underwent three level 3 polysomnography sleep studies: baseline, control appliance, and simulated arch constriction (SAC) appliance.
- Airway function was assessed by comparing REI and ODI.
Main Results:
- No significant differences in REI or ODI were observed among baseline, control, and SAC appliance conditions.
- Five participants exhibited REI values of 5.0 or greater, but this was independent of appliance use.
Conclusions:
- Simulated extreme dental arch constriction does not negatively affect airway function during sleep.
- Dental arch constriction does not appear to alter respiratory events during sleep.
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