Effects of Two-Phase Treatment with the Herbst and Preadjusted Edgewise Appliances on the Upper Airway Dimensions
Joint Authors
Yang, Yanqi
Koay, Woei Li
Tse, Christine Shuk Kwan
Gu, Min
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-03-17
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
Aims.
To assess the effects of two-phase treatment with the Herbst and the preadjusted edgewise appliances on upper airway dimensions and to investigate the correlation between changes in the upper airway dimensions and skeletal morphologies.
Methods.
A total of 27 Chinese male adolescents aged 12.8±1.3 years were selected.
Lateral cephalograms were collected to assess the skeletal morphology and upper airway dimensions.
Results.
Following Herbst appliance treatment, the upper airway space was significantly enlarged, with the retropalatal (U-MPW) increasing by 1.1±1.6 mm (P<0.001), the retroglossal (PASmin) increasing by 1.3±2.9 mm (P<0.05), and the hypopharynx (V-LPW) enlarging by 1.6±3.0 mm (P<0.01).
PASmin was found to show a negative correlation to the mandibular plane angle (MnPl-SN) by r=-0.413 (P<0.05).
There was no significant change (P>0.05) in upper airway dimensions during the second-phase treatment.
Conclusions.
Herbst appliance treatment increased the oropharyngeal and hypopharyngeal airway dimensions among adolescents with Class II malocclusion, and the effects were maintained throughout the second treatment phase with a preadjusted edgewise appliance.
There was a negative correlation between the change in the depth of the retroglossal pharynx and the mandibular plane angle.
American Psychological Association (APA)
Koay, Woei Li& Yang, Yanqi& Tse, Christine Shuk Kwan& Gu, Min. 2016. Effects of Two-Phase Treatment with the Herbst and Preadjusted Edgewise Appliances on the Upper Airway Dimensions. The Scientific World Journal،Vol. 2016, no. 2016, pp.1-8.
https://search.emarefa.net/detail/BIM-1120441
Modern Language Association (MLA)
Koay, Woei Li…[et al.]. Effects of Two-Phase Treatment with the Herbst and Preadjusted Edgewise Appliances on the Upper Airway Dimensions. The Scientific World Journal No. 2016 (2016), pp.1-8.
https://search.emarefa.net/detail/BIM-1120441
American Medical Association (AMA)
Koay, Woei Li& Yang, Yanqi& Tse, Christine Shuk Kwan& Gu, Min. Effects of Two-Phase Treatment with the Herbst and Preadjusted Edgewise Appliances on the Upper Airway Dimensions. The Scientific World Journal. 2016. Vol. 2016, no. 2016, pp.1-8.
https://search.emarefa.net/detail/BIM-1120441
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1120441