Abstract: An apparatus, system, and method of removing removable tooth positioning appliances, such as aligners, from the teeth of a patient. In one aspect, the invention is an apparatus for removing a removable tooth positioning appliance from teeth of a patient comprising: a handle portion; a member extending from the handle portion and having a distal end; and an engagement block having a tapered edge for engaging an edge of the tooth positioning appliance, the engagement block protruding from the member at or near the distal end.