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Article: Evaluation of the upper airway dimensions following Herbst appliance treatment in adolescents: A retrospective study
Title | Evaluation of the upper airway dimensions following Herbst appliance treatment in adolescents: A retrospective study |
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Authors | |
Keywords | Herbst appliance Upper airway Growth |
Issue Date | 2020 |
Publisher | Asian Pacific Orthodontic Society. The Journal's web site is located at http://www.apospublications.com/APOS_trends.html |
Citation | APOS Trends in Orthodontics, 2020, v. 10 n. 3, p. 153-163 How to Cite? |
Abstract | OBJECTIVES:
This retrospective study investigated dimensional changes in the upper airway following Herbst appliance therapy in adolescents with Class II malocclusion and compared those changes with growth data.
MATERIALS AND METHODS:
Lateral cephalograms from 44 Herbst-treated adolescents (23 boys, mean age = 13.3 ± 1.1 years, and 21 girls, mean age = 12.6 ± 1.1 years) were analyzed for the changes in the upper airway and craniofacial variables. Longitudinal cephalometric data of 34 untreated adolescents (15 boys, mean age = 12.6 ± 0.3 years, and 19 girls, mean age = 12.9 ± 0.4 years) were used as growth data for comparison.
RESULTS:
Following treatment, significant changes were noted in most of the variables. Boys displayed greater downward movement of the hyoid bone than girls did (P = 0.021). Compared with the growth data, a greater increase in retroglossal oropharyngeal depth and hypopharyngeal depth was observed in boys and girls, respectively. Both displayed a decrease in the inclination of the soft palate and a smaller change in nasopharyngeal depth.
CONCLUSION:
Herbst appliance therapy enlarges the upper airway dimensions at two dissimilar sites in girls (oropharynx) and boys (hypopharynx). Boys display a greater increase in anterior and posterior facial heights than girls do, potentially accounting for the site dissimilarities. Moreover, a Herbst appliance improves the inclination of the soft palate and restricts the growth of the nasopharynx in both boys and girls. |
Persistent Identifier | http://hdl.handle.net/10722/287926 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Gu, M | - |
dc.contributor.author | Lin, Y | - |
dc.contributor.author | McGrath, CPJ | - |
dc.contributor.author | Hagg, U | - |
dc.contributor.author | Wong, RWK | - |
dc.contributor.author | Yang, Y | - |
dc.date.accessioned | 2020-10-05T12:05:16Z | - |
dc.date.available | 2020-10-05T12:05:16Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | APOS Trends in Orthodontics, 2020, v. 10 n. 3, p. 153-163 | - |
dc.identifier.uri | http://hdl.handle.net/10722/287926 | - |
dc.description.abstract | OBJECTIVES: This retrospective study investigated dimensional changes in the upper airway following Herbst appliance therapy in adolescents with Class II malocclusion and compared those changes with growth data. MATERIALS AND METHODS: Lateral cephalograms from 44 Herbst-treated adolescents (23 boys, mean age = 13.3 ± 1.1 years, and 21 girls, mean age = 12.6 ± 1.1 years) were analyzed for the changes in the upper airway and craniofacial variables. Longitudinal cephalometric data of 34 untreated adolescents (15 boys, mean age = 12.6 ± 0.3 years, and 19 girls, mean age = 12.9 ± 0.4 years) were used as growth data for comparison. RESULTS: Following treatment, significant changes were noted in most of the variables. Boys displayed greater downward movement of the hyoid bone than girls did (P = 0.021). Compared with the growth data, a greater increase in retroglossal oropharyngeal depth and hypopharyngeal depth was observed in boys and girls, respectively. Both displayed a decrease in the inclination of the soft palate and a smaller change in nasopharyngeal depth. CONCLUSION: Herbst appliance therapy enlarges the upper airway dimensions at two dissimilar sites in girls (oropharynx) and boys (hypopharynx). Boys display a greater increase in anterior and posterior facial heights than girls do, potentially accounting for the site dissimilarities. Moreover, a Herbst appliance improves the inclination of the soft palate and restricts the growth of the nasopharynx in both boys and girls. | - |
dc.language | eng | - |
dc.publisher | Asian Pacific Orthodontic Society. The Journal's web site is located at http://www.apospublications.com/APOS_trends.html | - |
dc.relation.ispartof | APOS Trends in Orthodontics | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Herbst appliance | - |
dc.subject | Upper airway | - |
dc.subject | Growth | - |
dc.title | Evaluation of the upper airway dimensions following Herbst appliance treatment in adolescents: A retrospective study | - |
dc.type | Article | - |
dc.identifier.email | Gu, M: drgumin@hku.hk | - |
dc.identifier.email | Lin, Y: yflin@hku.hk | - |
dc.identifier.email | McGrath, CPJ: mcgrathc@hkucc.hku.hk | - |
dc.identifier.email | Wong, RWK: fyoung@hku.hk | - |
dc.identifier.email | Yang, Y: yangyanq@hku.hk | - |
dc.identifier.authority | Gu, M=rp01892 | - |
dc.identifier.authority | Lin, Y=rp02516 | - |
dc.identifier.authority | McGrath, CPJ=rp00037 | - |
dc.identifier.authority | Hagg, U=rp00020 | - |
dc.identifier.authority | Wong, RWK=rp00038 | - |
dc.identifier.authority | Yang, Y=rp00045 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.25259/APOS_83_2020 | - |
dc.identifier.hkuros | 314626 | - |
dc.identifier.volume | 10 | - |
dc.identifier.issue | 3 | - |
dc.identifier.spage | 153 | - |
dc.identifier.epage | 163 | - |
dc.identifier.eissn | 2321-4600 | - |
dc.identifier.isi | WOS:000575877300004 | - |
dc.publisher.place | India | - |
dc.identifier.issnl | 2321-1407 | - |