Systems, methods, and devices for improved orthodontic treatment of a patients teeth are provided herein. In some aspects, a method for fabricating an orthodontic appliance for treating a patients teeth is disclosed. The method may comprise determining a movement path to move a tooth from an initial arrangement towards a target arrangement determining a force system to move the tooth along the movement path determining a variable gable bend to produce the force system determining a geometry for a tooth receiving cavity of the appliance based on the variable gable bend and generating instructions for fabricating the appliance having a tooth receiving cavity formed according to the geometry for the tooth receiving cavity.
