High blood pressure is a serious risk for people with obstructive sleep apnea. A large review looked at how different treatments affect this condition. The study combined data from 1,141 patients who used either mandibular advancement devices or continuous positive airway pressure machines. Mandibular advancement devices are small mouthpieces that hold the jaw forward to keep the airway open. Continuous positive airway pressure machines push air into the nose to prevent breathing pauses.
The results showed that mandibular advancement devices achieved a greater drop in daytime blood pressure compared with CPAP. This difference was statistically significant and could help protect the heart. However, CPAP machines were still better at stopping the actual breathing pauses that define the disease. Patients using mandibular advancement devices also stayed with their treatment longer each night than those using CPAP.
This finding matters for patients who struggle to tolerate CPAP machines. For these individuals, mandibular advancement devices may serve as a viable alternative option for managing cardiovascular risk. The review did not report specific safety issues or side effects for either device. While the data is strong, it comes from combining many smaller trials. This approach gives a clearer picture but relies on the quality of the original studies.