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Morphospatial analysis of soft-tissue profile in patients with Class II division 1 malocclusion treated using twin block appliances: geometric morphometrics by GD Singh is a Dentistry article available to read on EtoBox.
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## Abstract __Author__– Singh GD __Objectives__– To study soft‐tissue profile changes in patients treated with twin block appliances (TBA) for the correction of Class II division 1 malocclusion. The null hypothesis is that soft‐tissue profiles do not show any significant improvements associated with TBA treatment. __Design__– Longitudinal, retrospective. __Setting and Sample Population__– Scotland, UK, using lateral cephalographs of 46 consecutive, prepubertal children (aged 9–11 years) and 55 adolescents (aged 12–14 years) obtained from an orthodontic practice. __Experimental Variable__– The prepubertal children underwent ≈13 months of TBA treatment, while the adolescents underwent ≈22 months of treatment. __Outcome Measures__– Configurations of 13 digitized homologous landmarks of pre‐ and post‐treatment soft‐tissue facial profiles were compared using cephalometry, Euclidean distance matrix analysis (EDMA) and thin plate spline (TPS) analysis. __Results__– Cephalometry showed that height increases associated with the TBA were in the labiomental areas, and the most significant height decreases were seen in the lip regions. The results of EDMA also indicated significant changes (__
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It is typically read by researchers, students, and practitioners in Dentistry.
- Author
- GD Singh
- Publisher
- John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley; Research Square (ISSN 1601-6335)
- Published
- 2002
- Language
- EN
- Field
- Dentistry (Health Sciences)