He has a clinical interest in communication disorders and improving interventions for breathing, speech and hearing. Dr. Green has developed surgical techniques and devices for complex airway reconstruction and is co-inventor, along with Scott Hollister, Ph.D.,of a life-saving, 3D-printed tracheal splint, as well as a number of other medical devices. He is the director of ongoing translational trials of 3D-printed medical devices in both humans and animals.