



Sources
- Ricketts, “A Four-Step Method to Distinguish Orthodontic Changes from Natural Growth” (1975). jco-online.com
- Ricketts, “Perspectives in the Clinical Application of Cephalometrics” (1981). moroortodontia.com.br
- You and Hägg, “A Comparison of Three Superimposition Methods” (1999), for the limitation of individual measurements.










































































