Figure 1. | A flow chart of the patients with obstructive sleep apnea (OSA) treated with mandibular advancement device (MAD) therapy in follow-up examinations (baseline, one month, three month, six month and 24 month follow-ups) and the reasons for discontinuing the treatment between the follow-ups (paragraph on the right). |
RFTA = radio frequency ablation therapy; CPAP = continuous positive airway pressure therapy. |