When you have a single missing tooth there are three options to replace it, either a single dental implant or a three-unit bridge or a denture.
In this case, this patient had two three-unit dental bridges done 17 years ago in the lower jaw. He is about to have a full mouth rehabilitation to restore his airway by prosthodontics due to his sleep apnea. We are doing this by altering his occlusal vertical and sagittal dimensions.
Airway prosthodontics is not restricted to a removable appliance or just relying on CPAP machine only.