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Article: Effects of headgear Herbst and mandibular step-by-step advancement versus conventional Herbst appliance and maximal jumping of the mandible

TitleEffects of headgear Herbst and mandibular step-by-step advancement versus conventional Herbst appliance and maximal jumping of the mandible
Authors
Issue Date2002
PublisherOxford University Press. The Journal's web site is located at http://ejo.oxfordjournals.org/
Citation
European Journal Of Orthodontics, 2002, v. 24 n. 2, p. 167-174 How to Cite?
AbstractThe aims of this study were to compare dental and skeletal treatment changes in Class Il division 1 malocclusions with two modes of maxillary control and two modes of bite-jumping. The subjects comprised Chinese children with severe Class Il division 1 malocclusions, i.e. 21 consecutive subjects (13.4 ± 1.4 years) treated with a headgear Herbst appliance and step-by-step advancement (HHSSA) of the mandible, and 24 consecutive subjects (13.2 ± 1.4 years) treated with a 'conventional' Herbst appliance with maximal jumping (HMJ) of the mandible. Lateral cephalograms obtained at the start and end of treatment were analysed. The results showed that the improvement of the sagittal jaw relationship was significantly larger (2.9 mm; P < 0.001) in the HHSSA group than in the HMJ group due to the increased effect on the maxilla (-1.5 mm, P < 0.001) and the mandible (+1.4 mm, NS). There was no significant difference in the change in lower anterior face height, being 2.7 and 3.1 mm, respectively. The mandibular plane angle decreased significantly in the HHSSA group (-0.7 degrees; P < 0.05) and increased insignificantly in the HMJ group (0.4 degrees, NS), the difference being statistically significant (P<0.01). The maxillary molars moved significantly more distally (1.1 mm, P < 0.05) and were intruded in the HHSSA group (-1.0 mm, P < 0.001) compared with a small extrusion in the HMJ group (+0.3 mm, NS), the difference being statistically significant (P < 0.001). There was no significant difference in the effect on the mandibular teeth. Treatment with HHSSA seems to result in a greater effect on the sagittal jaw relationship, improved vertical control and more maxillary molar movement. Mandibular anchorage loss was not reduced with step-by-step advancement of the mandible.
Persistent Identifierhttp://hdl.handle.net/10722/154194
ISSN
2015 Impact Factor: 1.44
2015 SCImago Journal Rankings: 1.090
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorDu, Xen_HK
dc.contributor.authorHägg, Uen_HK
dc.contributor.authorRabie, ABMen_HK
dc.date.accessioned2012-08-08T08:23:48Z-
dc.date.available2012-08-08T08:23:48Z-
dc.date.issued2002en_HK
dc.identifier.citationEuropean Journal Of Orthodontics, 2002, v. 24 n. 2, p. 167-174en_HK
dc.identifier.issn0141-5387en_HK
dc.identifier.urihttp://hdl.handle.net/10722/154194-
dc.description.abstractThe aims of this study were to compare dental and skeletal treatment changes in Class Il division 1 malocclusions with two modes of maxillary control and two modes of bite-jumping. The subjects comprised Chinese children with severe Class Il division 1 malocclusions, i.e. 21 consecutive subjects (13.4 ± 1.4 years) treated with a headgear Herbst appliance and step-by-step advancement (HHSSA) of the mandible, and 24 consecutive subjects (13.2 ± 1.4 years) treated with a 'conventional' Herbst appliance with maximal jumping (HMJ) of the mandible. Lateral cephalograms obtained at the start and end of treatment were analysed. The results showed that the improvement of the sagittal jaw relationship was significantly larger (2.9 mm; P < 0.001) in the HHSSA group than in the HMJ group due to the increased effect on the maxilla (-1.5 mm, P < 0.001) and the mandible (+1.4 mm, NS). There was no significant difference in the change in lower anterior face height, being 2.7 and 3.1 mm, respectively. The mandibular plane angle decreased significantly in the HHSSA group (-0.7 degrees; P < 0.05) and increased insignificantly in the HMJ group (0.4 degrees, NS), the difference being statistically significant (P<0.01). The maxillary molars moved significantly more distally (1.1 mm, P < 0.05) and were intruded in the HHSSA group (-1.0 mm, P < 0.001) compared with a small extrusion in the HMJ group (+0.3 mm, NS), the difference being statistically significant (P < 0.001). There was no significant difference in the effect on the mandibular teeth. Treatment with HHSSA seems to result in a greater effect on the sagittal jaw relationship, improved vertical control and more maxillary molar movement. Mandibular anchorage loss was not reduced with step-by-step advancement of the mandible.en_HK
dc.languageengen_US
dc.publisherOxford University Press. The Journal's web site is located at http://ejo.oxfordjournals.org/en_HK
dc.relation.ispartofEuropean Journal of Orthodonticsen_HK
dc.subject.meshAdolescenten_US
dc.subject.meshCephalometryen_US
dc.subject.meshExtraoral Traction Appliancesen_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshIncisor - Physiologyen_US
dc.subject.meshMaleen_US
dc.subject.meshMalocclusion, Angle Class Ii - Therapyen_US
dc.subject.meshMandibular Advancement - Instrumentation - Methodsen_US
dc.subject.meshMaxillofacial Developmenten_US
dc.subject.meshMolar - Physiologyen_US
dc.subject.meshOrthodontic Appliances, Functionalen_US
dc.subject.meshOrthodontics, Corrective - Instrumentationen_US
dc.titleEffects of headgear Herbst and mandibular step-by-step advancement versus conventional Herbst appliance and maximal jumping of the mandibleen_HK
dc.typeArticleen_HK
dc.identifier.emailHägg, U: euohagg@hkusua.hku.hken_HK
dc.identifier.emailRabie, ABM: rabie@hku.hken_HK
dc.identifier.authorityHägg, U=rp00020en_HK
dc.identifier.authorityRabie, ABM=rp00029en_HK
dc.description.naturelink_to_OA_fulltexten_US
dc.identifier.doi10.1093/ejo/24.2.167en_HK
dc.identifier.pmid12001553-
dc.identifier.scopuseid_2-s2.0-0036548244en_HK
dc.identifier.hkuros65998-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036548244&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume24en_HK
dc.identifier.issue2en_HK
dc.identifier.spage167en_HK
dc.identifier.epage174en_HK
dc.identifier.isiWOS:000174797000006-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridDu, X=7402551294en_HK
dc.identifier.scopusauthoridHägg, U=7006790279en_HK
dc.identifier.scopusauthoridRabie, ABM=7007172734en_HK

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