A study on the usefulness of endoscopy to oral appliance therapy in obstructive sleep apnea

In treatmant for obstructive sleep apnea (OSA),Oral appliance (OA) therapy is indicated in patients of mild-moderate OSA and unable to tolerate continuous positive airway pressure (CPAP). The mandibular position is usually set by 60 to 70 percent of the maximum protrusion and setting the appropriate titration of OA is important because it is one of the factor to make the treatment effective or ineffective. However, there is no clear criteria for the setting, therefore we often face difficulties to decide the necessity of titration of OA regarding the cases with poor effectiveness in the treatment and to explain the treatment to patients. We used nasoendoscope on the cases which were clinically ineffective to OA treatment and assessed the results.