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• W4248620158 abstract "I would like to congratulate Drs Langberg and Todd for the very fine treatment results obtained in “Treatment of a Class I malocclusion with severe bimaxillary protrusion” (Langberg BJ, Todd A. Am J Orthod Dentofacial Orthop 2004;126:739–46). However, the superimposed tracings were surprising: this adult female patient had a considerable forward rotation of the mandible during the treatment period, even though Class II elastics were used, although the skeletal pattern was hyperdivergent. According to the composite tracings, very little extrusion of the mandibular molars took place; this probably indicates good biomechanical control.The most surprising finding of the superimposed tracings was, however, the forward—and upward!—growth of the nose and lips. I cannot recall ever observing this in comparable cases treated by me or my colleagues; I wonder whether there could be a method error in the superimpositions? I am not accusing the authors of an error, but, because they presented an unusual finding, I expected a comment in the discussion. I would like to congratulate Drs Langberg and Todd for the very fine treatment results obtained in “Treatment of a Class I malocclusion with severe bimaxillary protrusion” (Langberg BJ, Todd A. Am J Orthod Dentofacial Orthop 2004;126:739–46). However, the superimposed tracings were surprising: this adult female patient had a considerable forward rotation of the mandible during the treatment period, even though Class II elastics were used, although the skeletal pattern was hyperdivergent. According to the composite tracings, very little extrusion of the mandibular molars took place; this probably indicates good biomechanical control. The most surprising finding of the superimposed tracings was, however, the forward—and upward!—growth of the nose and lips. I cannot recall ever observing this in comparable cases treated by me or my colleagues; I wonder whether there could be a method error in the superimpositions? I am not accusing the authors of an error, but, because they presented an unusual finding, I expected a comment in the discussion. Treatment of a class I malocclusion with severe bimaxillary protrusionAmerican Journal of Orthodontics and Dentofacial OrthopedicsVol. 126Issue 6PreviewThis report describes the treatment of a 20-year-old woman from Nigeria who had severe bimaxillary dentolveolar protrusion. The main issue in determining the appropriate treatment plan was the severity of the dentoalveolar protrusion. Four first premolars were extracted to reduce lip procumbancy. The change in the patient's facial esthetics was dramatic. Significant retraction of the upper and lower lips was achieved, and lip eversion and dentoalveolar protrusion were significantly improved. As the lips were retracted, mentalis strain was reduced; this improved chin projection. Full-Text PDF Readers’ forum: Authors’ response to Berg and PearsonAmerican Journal of Orthodontics and Dentofacial OrthopedicsVol. 127Issue 4PreviewWe appreciate very much the comments and questions regarding our article “Treatment of a Class I malocclusion with severe bimaxillary protrusion” (Langberg BJ, Todd A. Am J Orthod Dentofacial Orthop 2004;126:739–46). Those were astute observations concerning the discrepancies on the overall superimposition. These highly unusual findings can be explained by the fact that 2 lateral cephalometric units were used during the patient’s treatment. Full-Text PDF" @default.
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• W4248620158 date "2005-04-01" @default.
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• W4248620158 title "Superimposed tracings show questionable results" @default.
• W4248620158 doi "https://doi.org/10.1016/j.ajodo.2005.02.008" @default.
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