IADR Abstract Archives
Effects of mandibular advancement device (MAD) on upper airway in patients with obstructive sleep apnea syndrome (OSAS) assesment with cone-beam computed tomography (CBCT)
Objectives:
The purpose of the present study was to evaluate the effect of the mandibular advancement device (MAD) on upper airway in patients with obstructive sleep apnea syndrome by measuring the airway volume by using CBCT.
Methods: Eight patients (five men and three women) with OSAS, mean age 52.87±11.22 years worn an intraoral appliance for mandibular advancement during sleep. For each patient two CBCT scans (i-CAT; Imaging Sciences International, Hatfield, PA) were obtained one with and one without MAD.The measurements of the images were repeated by the same observer for a second time after 2 weeks. Intraclass correlation coefficient (ICC) was utilized to assess the correlation between repeated measuremets in the same patient. The mean value of all measurements were calculated and After Kolmogorov-Smirnov test, paired sample t tests was performed for statistical analysis with 0.05 significance level.
Results: Mean value of airway volumes with MAD was 21.19 ±9.93 cc, ranged from 7.25 to 36.97 cc. Mean value of airway volumes without MAD was13.99 ±5.72 cc, ranged from 6.10 to 23.10 cc.
The airway volumes were increased in the patients with MAD. A statically significant difference was found between the mean values with/without usage of MAD (p<0.05). And also the ICC showed excellent intraexeminer repeatability (ICC:0.997;95%).
Conclusions: In the limitations of this preliminary study , the usage of MAD may be associated with expanding of the upper airway volume of the patients with OSAS. But this mecanism is still under debate and further studies are needed to evaluate the effect of the MAD on the upper airway volume.
The purpose of the present study was to evaluate the effect of the mandibular advancement device (MAD) on upper airway in patients with obstructive sleep apnea syndrome by measuring the airway volume by using CBCT.
Methods: Eight patients (five men and three women) with OSAS, mean age 52.87±11.22 years worn an intraoral appliance for mandibular advancement during sleep. For each patient two CBCT scans (i-CAT; Imaging Sciences International, Hatfield, PA) were obtained one with and one without MAD.The measurements of the images were repeated by the same observer for a second time after 2 weeks. Intraclass correlation coefficient (ICC) was utilized to assess the correlation between repeated measuremets in the same patient. The mean value of all measurements were calculated and After Kolmogorov-Smirnov test, paired sample t tests was performed for statistical analysis with 0.05 significance level.
Results: Mean value of airway volumes with MAD was 21.19 ±9.93 cc, ranged from 7.25 to 36.97 cc. Mean value of airway volumes without MAD was13.99 ±5.72 cc, ranged from 6.10 to 23.10 cc.
The airway volumes were increased in the patients with MAD. A statically significant difference was found between the mean values with/without usage of MAD (p<0.05). And also the ICC showed excellent intraexeminer repeatability (ICC:0.997;95%).
Conclusions: In the limitations of this preliminary study , the usage of MAD may be associated with expanding of the upper airway volume of the patients with OSAS. But this mecanism is still under debate and further studies are needed to evaluate the effect of the MAD on the upper airway volume.