The Bionator I is a removable appliance designed for Class II malocclusions with deep bites. It holds the mandible forward using acrylic, with fluted channels guiding the eruption of posterior teeth for bite correction and dental arch expansion. An acrylic cap covers the lower incisors, with upper incisors meeting a flat plane, preventing unwanted anterior tooth eruption. The design ensures proper tongue positioning, with an omega loop for rigidity and optional expansion.