Splint & Sleep Apnea Splints & Sleep Apnea Snoring Appliance-Cantilever Herbst Design Hard/Soft Splint-Soft side contacts the teeth while hard side faces the opposing arch Upper Flat Occlusal Plane Splint Also Know as a Hard Nightguard Gelb Spint-for Repositioning of the Mandible Lower Hard Reinforced Acrylic Splint/Nightquard Kois Deprogramming Appliance Superior Repositioning Splint (SRS) also Called the Centric Relation Splint Hard Biostar Overlay Splint