A removable dental appliance may include an appliance body configured to at least partially surround a plurality of teeth of a patient. The appliance body defines a shell configured to receive a tooth of the plurality of teeth in an initial position and a bendable flap integrally formed with the appliance body to extend from a hinge axis of the shell. The bendable flap may be configured to apply a force to the tooth to cause movement of the tooth toward a desired position when the removable dental appliance is worn by the patient.
