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Updated: Aug 8, 2026
14:13
Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing
Published on: May 6, 2014
Airway changes in relationship to mandibular posturing
L M Johnson1, G W Arnett, J A Tamborello
1Center for Corrective Jaw Surgery, Santa Barbara, CA 93101.
Summary
Forward mandibular positioning significantly increased posterior airway space (PAS) by 56% in sleep apnea patients. This finding highlights the potential of oral appliances for improving airway patency.
Area of Science:
- Sleep Medicine
- Dental Sleep Medicine
- Respiratory Physiology
Background:
- Obstructive sleep apnea (OSA) is a common sleep disorder characterized by repeated episodes of upper airway collapse.
- The posterior airway space (PAS) is a critical determinant of upper airway patency during sleep.
- Mandibular advancement is a recognized treatment modality for OSA, aiming to enlarge the airway.
Purpose of the Study:
- To radiographically compare the posterior airway space in patients with sleep apnea.
- To evaluate the effect of mandibular repositioning (reposed vs. protruded) on the PAS.
- To simulate the potential impact of anterior orthotic appliances on airway dimensions.
Main Methods:
- Radiographic evaluation of posterior airway space.
- Comparison between mandibular reposed and protruded positions.
- Study conducted at Santa Barbara Sleep Disorders Medical Center.
Main Results:
- Forward mandibular posturing resulted in a mean increase of posterior airway space (PAS) by approximately 56%.
- Significant variations in the degree of PAS increase were observed among patients.
- The study simulated the effects of oral appliances used in sleep apnea treatment.
Conclusions:
- Mandibular protrusion effectively increases posterior airway space in patients with sleep apnea.
- Oral appliance therapy, by advancing the mandible, may offer a viable treatment option for OSA.
- Individual patient responses to mandibular advancement can vary widely, necessitating personalized treatment approaches.
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