Yes, this is easily possible. somnipax shield is not a mandibular advancement device (MAD) – that is, it does not shift the lower jaw forward; whereby removable dental prostheses may result in insufficient traction being exerted to facilitate mandibular advancement, as a result of the instability of the removable dental prostheses. somnipax shield is an anti-snoring mouth guard, which simply seals the oral cavity and, thus, prevents open mouth breathing.