Australia’s CSIRO and Oventus have worked together to produce a personalized mouthpiece that tackles sleep apnea, says AsianScientist magazine.

The new mouthpiece, which is printed from titanium after a personal 3D scan and subsequently coated with medical grade plastic, is customized for each patient. It has a duckbill that extends from the mouth like a whistle, and is, according to Oventus CEO Neil Anderson, “used only on the top teeth which makes it more compact and far more comfortable.”