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Article: Cephalometric A point changes during and after maxillary protraction and expansion

TitleCephalometric A point changes during and after maxillary protraction and expansion
Authors
Issue Date1996
PublisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/ajodo
Citation
American Journal Of Orthodontics and Dentofacial Orthopedics, 1996, v. 110 n. 4, p. 423-430 How to Cite?
AbstractThe purpose of this study was to analyze the treatment and posttreatment maxillary changes achieved with maxillary protraction therapy. The cephalometric records of 25 consecutively treated Chinese children with Class III malocclusions (mean age 8.4 years) were analyzed for cephalometric A point changes, which were then compared with an untreated, age and sex matched Class III control sample. A cephalometric maxillary superimposition technique was used to differentiate between the skeletal and the local contributions to the total A point change. Results showed that 6 months of maxillary protraction therapy produced a mean A point advancement of 2.4 mm compared with 0.2 mm in the control group. Of this advancement, 75% was found to be due to skeletal maxillary advancement and 25% was attributed to local remodeling. Significantly less downward movement of A point was found with treatment compared with the controls, which could be related to the direction of force application. No significant differences were found in the horizontal and the vertical movements of A point between the treatment and the control groups during the 12-month posttreatment period, indicating stability of early maxillary protraction in patients with Class III malocclusions.
Persistent Identifierhttp://hdl.handle.net/10722/153982
ISSN
2015 Impact Factor: 1.69
2015 SCImago Journal Rankings: 1.249
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorShanker, Sen_US
dc.contributor.authorNgan, Pen_US
dc.contributor.authorWade, Den_US
dc.contributor.authorBeck, Men_US
dc.contributor.authorYiu, CKYen_US
dc.contributor.authorHägg, EUOen_US
dc.contributor.authorWei, SHYen_US
dc.date.accessioned2012-08-08T08:22:38Z-
dc.date.available2012-08-08T08:22:38Z-
dc.date.issued1996en_US
dc.identifier.citationAmerican Journal Of Orthodontics and Dentofacial Orthopedics, 1996, v. 110 n. 4, p. 423-430en_US
dc.identifier.issn0889-5406en_US
dc.identifier.urihttp://hdl.handle.net/10722/153982-
dc.description.abstractThe purpose of this study was to analyze the treatment and posttreatment maxillary changes achieved with maxillary protraction therapy. The cephalometric records of 25 consecutively treated Chinese children with Class III malocclusions (mean age 8.4 years) were analyzed for cephalometric A point changes, which were then compared with an untreated, age and sex matched Class III control sample. A cephalometric maxillary superimposition technique was used to differentiate between the skeletal and the local contributions to the total A point change. Results showed that 6 months of maxillary protraction therapy produced a mean A point advancement of 2.4 mm compared with 0.2 mm in the control group. Of this advancement, 75% was found to be due to skeletal maxillary advancement and 25% was attributed to local remodeling. Significantly less downward movement of A point was found with treatment compared with the controls, which could be related to the direction of force application. No significant differences were found in the horizontal and the vertical movements of A point between the treatment and the control groups during the 12-month posttreatment period, indicating stability of early maxillary protraction in patients with Class III malocclusions.en_US
dc.languageengen_US
dc.publisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/ajodoen_US
dc.relation.ispartofAmerican Journal of Orthodontics and Dentofacial Orthopedicsen_US
dc.rightsAmerican Journal of Orthodontics and Dentofacial Orthopedics. Copyright © Mosby, Inc.-
dc.subject.meshCase-Control Studiesen_US
dc.subject.meshCephalometryen_US
dc.subject.meshChilden_US
dc.subject.meshExtraoral Traction Appliancesen_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshMaleen_US
dc.subject.meshMalocclusion, Angle Class Iii - Therapyen_US
dc.subject.meshMaxillaen_US
dc.subject.meshMultivariate Analysisen_US
dc.subject.meshOutcome Assessment (Health Care)en_US
dc.subject.meshPalatal Expansion Techniqueen_US
dc.subject.meshReproducibility Of Resultsen_US
dc.titleCephalometric A point changes during and after maxillary protraction and expansionen_US
dc.typeArticleen_US
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0889-5406&volume=110&spage=423&epage=430&date=1996&atitle=Cephalometric+A+point+changes+during+and+after+maxillary+protraction+and+expansion.-
dc.identifier.emailYiu, CKY: ckyyiu@hkucc.hku.hken_US
dc.identifier.emailHägg, EUO: euohagg@hkusua.hku.hken_US
dc.identifier.emailWei, SHY: cdowei@hkuxa.hku.hk-
dc.identifier.authorityYiu, C=rp00018en_US
dc.identifier.authorityHägg, U=rp00020en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S0889-5406(96)70046-X-
dc.identifier.pmid8876495-
dc.identifier.scopuseid_2-s2.0-0030266078en_US
dc.identifier.hkuros21224-
dc.identifier.volume110en_US
dc.identifier.issue4en_US
dc.identifier.spage423en_US
dc.identifier.epage430en_US
dc.identifier.isiWOS:A1996VN62100017-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridShanker, S=10043516200en_US
dc.identifier.scopusauthoridNgan, P=7006250823en_US
dc.identifier.scopusauthoridWade, D=36846863600en_US
dc.identifier.scopusauthoridBeck, M=7402769215en_US
dc.identifier.scopusauthoridYiu, C=7007115156en_US
dc.identifier.scopusauthoridHägg, U=7006790279en_US
dc.identifier.scopusauthoridWei, SH=7401765260en_US

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