Objective To update the meta-analysis comparing the effectiveness of oral appliance (OA) with continuous positive airway pressure (CPAP) in treating patients with obstructive sleep apnea (OSA). Methods PubMed, ISI Web of Knowledge, Ovid, EBSCO Dentistry & Oral Science Source, The Cochrane Library, and Embase database were searched for RCTs until 23 May 2017. Meta-analyses were performed using RevMan 5.3. Results Sixteen RCTs were included. Compared with OA, CPAP significantly decreased AHI, min SaO2, ARI, ESS (p < 0.05), with no significant difference in REM%, FOSQ, BP (p ≥ 0.05). OA significantly improved REM% in the severe groups and ESS in the adjustable OA group (p < 0.05). OA shared greater preference. Conclusion Even though CPAP can better decrease the severity of OSA, more patients opted for OA, which showed better results in severe patients, especially adjustable OA.

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An environment-friendly device was developed and optimized for the rapid measurement of chemical oxygen demand (COD) in waters.