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Article: Changes in the upper airway, hyoid bone and craniofacial morphology between patients treated with headgear activator and Herbst appliance: A retrospective study on lateral cephalometry
Title | Changes in the upper airway, hyoid bone and craniofacial morphology between patients treated with headgear activator and Herbst appliance: A retrospective study on lateral cephalometry |
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Authors | |
Keywords | Airway Cephalometrics Class II Functional appliances Hyoid bone |
Issue Date | 2021 |
Publisher | Wiley-Blackwell Publishing, Inc.. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=1601-6335&site=1 |
Citation | Orthodontics & Craniofacial Research, 2021, v. 24 n. 3, p. 360-369 How to Cite? |
Abstract | Background:
The present study compared the treatment changes in the upper airway, hyoid bone position and craniofacial morphology between two groups of children with skeletal class II malocclusion treated with the headgear activator (HGA) and Herbst appliance (Herbst).
Setting and sample population:
Orthodontic population from the Faculty of Dentistry of the University of Hong Kong.
Methods:
Thirty-four skeletal class II patients treated with the HGA (17 patients, mean age 10.6 ± 1.5 years) and the Herbst (17 patients, mean age 11.0 ± 1.4 years) were matched for sex, age, overjet, skeletal class and mandibular divergence. The patients received lateral cephalometric radiographs (LCRs) at the beginning of treatment (T1), after treatment (T2) and at follow-up (T3). In the HGA group, patients underwent LCRs 7 months before the beginning of treatment (T0), which were used as growth reference for intra-group comparison. Paired Student's t tests were used for intra- and inter-group comparisons (α = .05).
Results:
Treatment changes (T2-T1) did not differ significantly between the groups. However, at follow-up (T3-T1) the Herbst group showed a smaller increase than the HGA group in the vertical position of the hyoid bone relative to the Frankfort plane (P = .013) and mandibular plane (P = .013).
Conclusions:
There were no significant differences in the upper airway, hyoid bone position and craniofacial morphology between the groups at the end of treatment. However, the Herbst may provide better long-term control of the vertical position of the hyoid bone than the HGA in children with skeletal class II malocclusion. |
Persistent Identifier | http://hdl.handle.net/10722/306661 |
ISSN | 2023 Impact Factor: 2.4 2023 SCImago Journal Rankings: 0.967 |
PubMed Central ID | |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Gu, M | - |
dc.contributor.author | Savoldi, F | - |
dc.contributor.author | Chan, EYL | - |
dc.contributor.author | Tse, CSK | - |
dc.contributor.author | Lau, MTW | - |
dc.contributor.author | Wey, MC | - |
dc.contributor.author | Hägg, U | - |
dc.contributor.author | Yang, Y | - |
dc.date.accessioned | 2021-10-22T07:37:49Z | - |
dc.date.available | 2021-10-22T07:37:49Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Orthodontics & Craniofacial Research, 2021, v. 24 n. 3, p. 360-369 | - |
dc.identifier.issn | 1601-6335 | - |
dc.identifier.uri | http://hdl.handle.net/10722/306661 | - |
dc.description.abstract | Background: The present study compared the treatment changes in the upper airway, hyoid bone position and craniofacial morphology between two groups of children with skeletal class II malocclusion treated with the headgear activator (HGA) and Herbst appliance (Herbst). Setting and sample population: Orthodontic population from the Faculty of Dentistry of the University of Hong Kong. Methods: Thirty-four skeletal class II patients treated with the HGA (17 patients, mean age 10.6 ± 1.5 years) and the Herbst (17 patients, mean age 11.0 ± 1.4 years) were matched for sex, age, overjet, skeletal class and mandibular divergence. The patients received lateral cephalometric radiographs (LCRs) at the beginning of treatment (T1), after treatment (T2) and at follow-up (T3). In the HGA group, patients underwent LCRs 7 months before the beginning of treatment (T0), which were used as growth reference for intra-group comparison. Paired Student's t tests were used for intra- and inter-group comparisons (α = .05). Results: Treatment changes (T2-T1) did not differ significantly between the groups. However, at follow-up (T3-T1) the Herbst group showed a smaller increase than the HGA group in the vertical position of the hyoid bone relative to the Frankfort plane (P = .013) and mandibular plane (P = .013). Conclusions: There were no significant differences in the upper airway, hyoid bone position and craniofacial morphology between the groups at the end of treatment. However, the Herbst may provide better long-term control of the vertical position of the hyoid bone than the HGA in children with skeletal class II malocclusion. | - |
dc.language | eng | - |
dc.publisher | Wiley-Blackwell Publishing, Inc.. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=1601-6335&site=1 | - |
dc.relation.ispartof | Orthodontics & Craniofacial Research | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Airway | - |
dc.subject | Cephalometrics | - |
dc.subject | Class II | - |
dc.subject | Functional appliances | - |
dc.subject | Hyoid bone | - |
dc.title | Changes in the upper airway, hyoid bone and craniofacial morphology between patients treated with headgear activator and Herbst appliance: A retrospective study on lateral cephalometry | - |
dc.type | Article | - |
dc.identifier.email | Gu, M: drgumin@hku.hk | - |
dc.identifier.email | Savoldi, F: fsavoldi@hku.hk | - |
dc.identifier.email | Yang, Y: yangyanq@hku.hk | - |
dc.identifier.authority | Gu, M=rp01892 | - |
dc.identifier.authority | Savoldi, F=rp02902 | - |
dc.identifier.authority | Hägg, U=rp00020 | - |
dc.identifier.authority | Yang, Y=rp00045 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1111/ocr.12442 | - |
dc.identifier.pmid | 33217159 | - |
dc.identifier.pmcid | PMC8411420 | - |
dc.identifier.scopus | eid_2-s2.0-85096910757 | - |
dc.identifier.hkuros | 328815 | - |
dc.identifier.volume | 24 | - |
dc.identifier.issue | 3 | - |
dc.identifier.spage | 360 | - |
dc.identifier.epage | 369 | - |
dc.identifier.isi | WOS:000594749500001 | - |
dc.publisher.place | United States | - |