1. A non-transitory computing device readable medium having executable instructions which can be executed by a processor to cause a computing device to perform a method, comprising: associating an abnormal tooth shape representing an abnormal tooth or a not fully erupted tooth of a patient with a model tooth shape representing a normal fully erupted tooth from a reference library of model tooth shapes representing normal fully erupted teeth; mapping a predefined dental reference identified from information comprising the model tooth shape onto at least an abnormal portion of the abnormal tooth shape in a position that the predefined dental reference would assume if the abnormal tooth shape were a normal tooth shape; and adding a location of the predefined dental reference to the abnormal tooth shape based on the mapped predefined dental reference from the model tooth shape.