By Randy K. Newby, DDS In this four-part series, we will take a deep dive into the Sassouni Plus Analysis. 2 This first part will describe the 7 planes and 8 arcs that make up the Sassouni Archial Analysis, as well as Locus O and determining its position. This may seem academic and boring, but it is necessary for the reader to understand the planes and arcs to be able to apply them when diagnosing and treatment planning an orthodontic case. T he Sassouni Plus Analysis (Fig. 1) is an orthodontic analysis that relates the patient’s anatomical structures to each other within the framework of the individual patient. The Cephalo-metric Bottom Line does have some numerical norms, but most of the Fig. 1 analysis is based on the patient’s skeletal landmarks as they relate to one another. The original Sassouni Archial Analysis was conceived by Dr. Viken Sassouni 3 in 1955. Dr. Sassouni had degrees in both orthodontics and anthropology. He combined his anthropological background with knowledge of craniometricians that came before him and applied it to the discipline of orthodontics. He believed that no one cephalometric baseline or angle remained consis-tent enough to serve as a basis of comparison for all individuals. Fig. 2 Fig. 1 8 Winter 2023 JAOS
Journal of the American Orthodontic Society Winter 2023: Page 8
