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Fig. 9. Superimposed cephalometric tracings showing the changes from pretreatment (black) to posttreatment (red) in an adult with inactive periodontal disease treated with clear aligners. A, Superimposed on the sella-nasion plane at sella. B, Superimposed on the palatal plane at the anterior nasal spine. C, Superimposed on the mandibular plane at the menton. The intrusion of the incisors was achieved, and the inclination of the anterior teeth was improved.
Korean J Orthod 2022;52:439~450 https://doi.org/10.4041/kjod21.263
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