Effects of mandibular position and body posture on nasal patency in normal awake subjects.

Effects of posture change on nasal patency.

UNLABELLED Nasal obstruction when lying down frequently brings patients to the otolaryngologic clinic. There are several explanations for the problem. The nasal mucosa reaction to venous changes that alter local blood flow, secondary to compression of the neck veins or hydrostatic pressures, is the most accepted explanation. Acoustic rhinometry is a new non-invasive technique to assess nasal pa...

Effects of posture change on nasal patency Summary

Association between nasal respiratory obstruction and vertical mandibular position.

Vertical mandibular position is considered to have an effect on the patency of the upper airway, because mouth opening is associated with a backward and downward displacement of the mandible and tongue. This study was conducted to investigate the nature of mandibular displacement at rest and to determine whether or not different respiration modes and body postures influence the mandibular posit...

Effects of different jaw relations on postural stability in human subjects.

Authors investigated the effects of different jaws relations on body posture in a sample of 95 subjects. All subjects underwent a posturometric and stabilometric analysis using a computerized footboard. Tests were performed in three mandibular positions: centric occlusion, rest position and myocentric position, respectively determined by teeth engagement, joints position, and muscles contractio...

Effects of a Titratable Oral Appliance on Supine Airway Size in Awake Non-Apneic Individuals SLEEP-RELATED BREATHING DISORDERS

RESPIRATORY-RELATED ACTIVATION OF THE UPPERAIRWAY-DILATING AND TONGUE-PROTRUDING MUSCLES IS WIDELY KNOWN to be effective in reducing the tendency of the upper airway and tongue to collapse during sleep. The electromyographic (EMG) activity of the genioglossus (GG) muscle increases in the head-up and/or supine position and thereby acts to maintain upper airway patency.1-4 However, sleeprelated r...