Objective: To investigate pharyngeal size changes induced by a mandibular advancement device (MAD) in the treatment of obstructive sleep apnea (OSA) in adult patients, using computed tomography (CT). Materials and Methods: Eighteen patients with mild to moderate OSA (mean apnea/hypopnea index, AHI, of 16.7) were treated with a MAD. After 3 months of treatment, three-dimensional changes in pharyngeal dimensions were measured on CT images performed with a 16 detector-row CT scanner (Light Speed Plus, GE Medical Systems). Two consecutive axial sections from the hard palate to the epiglottis were obtained with and without the appliance. Measurements were made of the following airway areas (mm) and lengths (mm): RF (nasopharynx); ROF (naso-oropharynx); OF (oropharynx); IPF (hypopharynx); SPL (soft palate length); SPT (soft palate thickness); Rgn (retrognation)-hyoid bone; hyoid bone-C2; Rgn-C2; PhL (oropharynx length); pharynx posterior wall thickness at three level. The angle between the hard and the soft palate (APDM) was also calculated. Results: AHI improved significantly (from 16.7 to 11.2) when the appliance was used. Measurements from CT scans showed statistically significant increments in the naso-oropharynx area (RF P < .014; ROF P < .050), in the Rgn-C2 length (P < .005) and in the angle between the hard and the soft palate (APDM P < .001). Conclusions: MAD significantly expands the areas of the upper airway lumen involved in the collapse, confirming its effectiveness in the treatment of patients with mild to moderate OSA.

Role of computed tomography in the evaluation of orthodontictreatment in adult patients with Obstructive Sleep Apnea Syndrome (OSAS) / G. Laganà; L. Franchi; P. Cozza. - In: WORLD JOURNAL OF ORTHODONTICS. - ISSN 1530-5678. - STAMPA. - Papers and Abstracts, 7th International Orthodontic Congress Sydney, Australia, February 6–9, 2010:(2010), pp. 1331-1331.

Role of computed tomography in the evaluation of orthodontictreatment in adult patients with Obstructive Sleep Apnea Syndrome (OSAS)

FRANCHI, LORENZO;
2010

Abstract

Objective: To investigate pharyngeal size changes induced by a mandibular advancement device (MAD) in the treatment of obstructive sleep apnea (OSA) in adult patients, using computed tomography (CT). Materials and Methods: Eighteen patients with mild to moderate OSA (mean apnea/hypopnea index, AHI, of 16.7) were treated with a MAD. After 3 months of treatment, three-dimensional changes in pharyngeal dimensions were measured on CT images performed with a 16 detector-row CT scanner (Light Speed Plus, GE Medical Systems). Two consecutive axial sections from the hard palate to the epiglottis were obtained with and without the appliance. Measurements were made of the following airway areas (mm) and lengths (mm): RF (nasopharynx); ROF (naso-oropharynx); OF (oropharynx); IPF (hypopharynx); SPL (soft palate length); SPT (soft palate thickness); Rgn (retrognation)-hyoid bone; hyoid bone-C2; Rgn-C2; PhL (oropharynx length); pharynx posterior wall thickness at three level. The angle between the hard and the soft palate (APDM) was also calculated. Results: AHI improved significantly (from 16.7 to 11.2) when the appliance was used. Measurements from CT scans showed statistically significant increments in the naso-oropharynx area (RF P < .014; ROF P < .050), in the Rgn-C2 length (P < .005) and in the angle between the hard and the soft palate (APDM P < .001). Conclusions: MAD significantly expands the areas of the upper airway lumen involved in the collapse, confirming its effectiveness in the treatment of patients with mild to moderate OSA.
2010
G. Laganà; L. Franchi; P. Cozza
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/648319
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