This document provides biographical information about Dr. Nance and summarizes the Nance analysis and Mills and Hamilton analysis orthodontic assessment techniques. It describes how the Nance analysis uses study models and dividers to measure the ideal arch length, actual arch length, and determine the space relationship. It then explains that the Mills and Hamilton analysis uses a mathematical formula to calculate arch perimeter based on arch width and length measurements, relating the maxillary arch shape to a parabola.