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Article: Diagnostic criteria for pseudo-Class III malocclusion.

TitleDiagnostic criteria for pseudo-Class III malocclusion.
Authors
Issue Date2000
PublisherMosby, Inc. The Journal's web site is located at http://www.elsevier.com/locate/ajodo
Citation
American Journal Of Orthodontics And Dentofacial Orthopedics : Official Publication Of The American Association Of Orthodontists, Its Constituent Societies, And The American Board Of Orthodontics, 2000, v. 117 n. 1, p. 1-9 How to Cite?
AbstractThe aim of this study is to identify the diagnostic criteria for pseudo-Class III malocclusion and compare it with Class I malocclusion in the southern Chinese population. Sixty-seven patients (mean age, 10.9 +/- 1.8 years) were included in this study; 36 patients represented pseudo-Class III malocclusion. Selection criteria included the following: (1) anterior crossbite (at least 2 incisors with negative overjet and overbite); (2) mandibular displacement; (3) all patients were southern Chinese who had been followed after the growth spurt, none had developed a skeletal Class III malocclusion; (4) the patients were treated for an average of 7 months to procline upper incisors and retrocline lower incisors. None of the cases received any treatment that might affect skeletal growth. Thirty-one patients with Class I malocclusion were included in the Class I malocclusion group for the comparison of dentoskeletal characteristics with the pseudo-Class III malocclusion group. Selection criteria included the following: (1) skeletal Class I malocclusion with normal overjet and overbite, (2) mild to moderate crowding with Class I molar relationship, (3) straight facial profile. The following were included in the assessment of pseudo-Class III malocclusion cases: (1) family history, (2) molar and canine relationships at habitual occlusion and centric relation, and (3) dentoskeletal morphology. The results were that 72% of the examined cases in the pseudo-Class III malocclusion group showed no family history and 75% showed Class I molar relationship at habitual occlusion. Compared with the Class I malocclusion group, subjects in the pseudo-Class III malocclusion group showed a significantly decreased midface length, increased maxillary-mandibular difference, more retroclined upper incisors, and a retrusive upper lip. In conclusion, a pseudo-Class III malocclusion is characterized by retroclined upper incisors, retrusive upper lip, decreased midface length, and increased maxillary-mandibular difference. Findings of this study showed that patients with a pseudo-Class III malocclusion exhibit certain morphologic, dental, and skeletal characteristics that should be of aid in the diagnosis of pseudo-Class III malocclusion.
Persistent Identifierhttp://hdl.handle.net/10722/154085
ISSN
2015 Impact Factor: 1.69
2015 SCImago Journal Rankings: 1.249
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorRabie, ABen_US
dc.contributor.authorGu, Yen_US
dc.date.accessioned2012-08-08T08:23:11Z-
dc.date.available2012-08-08T08:23:11Z-
dc.date.issued2000en_US
dc.identifier.citationAmerican Journal Of Orthodontics And Dentofacial Orthopedics : Official Publication Of The American Association Of Orthodontists, Its Constituent Societies, And The American Board Of Orthodontics, 2000, v. 117 n. 1, p. 1-9en_US
dc.identifier.issn0889-5406en_US
dc.identifier.urihttp://hdl.handle.net/10722/154085-
dc.description.abstractThe aim of this study is to identify the diagnostic criteria for pseudo-Class III malocclusion and compare it with Class I malocclusion in the southern Chinese population. Sixty-seven patients (mean age, 10.9 +/- 1.8 years) were included in this study; 36 patients represented pseudo-Class III malocclusion. Selection criteria included the following: (1) anterior crossbite (at least 2 incisors with negative overjet and overbite); (2) mandibular displacement; (3) all patients were southern Chinese who had been followed after the growth spurt, none had developed a skeletal Class III malocclusion; (4) the patients were treated for an average of 7 months to procline upper incisors and retrocline lower incisors. None of the cases received any treatment that might affect skeletal growth. Thirty-one patients with Class I malocclusion were included in the Class I malocclusion group for the comparison of dentoskeletal characteristics with the pseudo-Class III malocclusion group. Selection criteria included the following: (1) skeletal Class I malocclusion with normal overjet and overbite, (2) mild to moderate crowding with Class I molar relationship, (3) straight facial profile. The following were included in the assessment of pseudo-Class III malocclusion cases: (1) family history, (2) molar and canine relationships at habitual occlusion and centric relation, and (3) dentoskeletal morphology. The results were that 72% of the examined cases in the pseudo-Class III malocclusion group showed no family history and 75% showed Class I molar relationship at habitual occlusion. Compared with the Class I malocclusion group, subjects in the pseudo-Class III malocclusion group showed a significantly decreased midface length, increased maxillary-mandibular difference, more retroclined upper incisors, and a retrusive upper lip. In conclusion, a pseudo-Class III malocclusion is characterized by retroclined upper incisors, retrusive upper lip, decreased midface length, and increased maxillary-mandibular difference. Findings of this study showed that patients with a pseudo-Class III malocclusion exhibit certain morphologic, dental, and skeletal characteristics that should be of aid in the diagnosis of pseudo-Class III malocclusion.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 orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodonticsen_US
dc.rightsAmerican Journal of Orthodontics and Dentofacial Orthopedics. Copyright © Mosby, Inc.-
dc.subject.meshCentric Relationen_US
dc.subject.meshCephalometryen_US
dc.subject.meshChilden_US
dc.subject.meshCuspid - Pathologyen_US
dc.subject.meshFaceen_US
dc.subject.meshFemaleen_US
dc.subject.meshFollow-Up Studiesen_US
dc.subject.meshHumansen_US
dc.subject.meshIncisor - Pathologyen_US
dc.subject.meshLip - Pathologyen_US
dc.subject.meshMaleen_US
dc.subject.meshMalocclusion, Angle Class I - Diagnosis - Pathologyen_US
dc.subject.meshMalocclusion, Angle Class Iii - Classification - Diagnosis - Genetics - Pathology - Therapyen_US
dc.subject.meshMandible - Pathologyen_US
dc.subject.meshMaxilla - Pathologyen_US
dc.subject.meshMaxillofacial Developmenten_US
dc.subject.meshMolar - Pathologyen_US
dc.subject.meshPatient Selectionen_US
dc.subject.meshTooth Movementen_US
dc.titleDiagnostic criteria for pseudo-Class III malocclusion.en_US
dc.typeArticleen_US
dc.identifier.emailRabie, AB:rabie@hku.hken_US
dc.identifier.authorityRabie, AB=rp00029en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid10629513-
dc.identifier.scopuseid_2-s2.0-0033631186en_US
dc.identifier.hkuros48475-
dc.identifier.volume117en_US
dc.identifier.issue1en_US
dc.identifier.spage1en_US
dc.identifier.epage9en_US
dc.identifier.isiWOS:000084883600002-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridRabie, AB=7007172734en_US
dc.identifier.scopusauthoridGu, Y=7403046201en_US

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