a method for forming a tooth positioner for repositioning at least one tooth of a patient includes providing a dental arch cast of a patient , separating at least one tooth from the dental arch cast , fixing a pin in a stump part of the at least one separated tooth , and in any non - separated teeth , reconstructing the dental arch cast of the patient by aligning the separated teeth to correspond to the alignment in the patient &# 39 ; s mouth and holding the pins in a material that may be softened by heat , heating an area to soften an area , applying force to the pin fixed in the at least one tooth to be repositioned to move it in a desired direction to obtain a realigned arch , and forming a tooth positioner corresponding to the realigned arch . the tooth positioner is used by having the patient wear it for a period of time .