This chapter covers the rationale of and standard procedure for producing a cephalometric superimposition. This method uses the Ethmoid Triad for the overall superimposition, the internal structures of the palate and key ridges for the maxillary superimposition, and the internal structures of the mandibular symphysis and the lower border of the third molar follicle for the mandibular superimposition. This method gives the learner a foundation for understanding and interpreting the results of the superimposition.

This course was a collaboration between Dr. Robert Little, Professor Emeritus, University of Washington, Department of Orthodontics, Seattle, Washington and Dr. Rebecca Poling of Anchorage, Alaska, who was the Editor for the collaboration. Dr. Michael Fey, Professor, University of Washington, Department of Orthodontics, provided photography for the chapter on Landmarks and contributed to the chapter on Superimposition.