A method and system for designing a dental appliance for an individual. A 3D model of the individual's features including a portion of their face and arches is displayed on a 3D display. The 3D model includes an augmented reality dental appliance. The 3D model can be manipulated by inputs detected by a motion sensor, a brain-computer interface, both, or other sensors. In response to gestures neural activity, or other inputs, the augmented reality dental appliance or other aspects of the 3D model are modified. The 3D model is updated in response to the modified dental appliance or other changes, and repositioned to provide an updated 3D model. The updated 3D model is displayed on the 3D display. This system and method facilitates modification of the augmented reality dental appliance and observation of the resulting aesthetic effects.