| Sagittal mandibular changes with overbite correction in subjects with different mandibular growth directions: late mixed-dentition treatment effects. | |
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MedLine Citation:
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PMID: 18331938 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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INTRODUCTION: This study involved the assessment of pretreatment and posttreatment lateral cephalograms from late mixed-dentition patients with Class II Division 1 and Division 2 malocclusions with mild mandibular crowding. All were selected before treatment began. METHODS: Combined growth and treatment effects were compared with changes in untreated subjects. The study was designed specifically to determine whether anteroposterior mandibular dentoalveolar and skeletal changes associated with reduction of deep incisal overbites, by using a particular late mixed-dentition treatment approach, are influenced by the direction of mandibular growth during treatment. RESULTS: In mesofacial and brachyfacial subjects, significantly greater forward movements were found at Point B after deep overbite correction than in dolichofacial subjects. This apparently enhanced effect compared with the untreated controls was not seen at pogonion. CONCLUSIONS: Clinicians should expect considerably greater forward movement of the mandibular dentoalveolus with normal mandibular growth after incisal bite opening in mesofacial and brachyfacial patients. As a consequence, less maxillary retraction might be necessary in growing mesofacial and brachyfacial Class II Division 1 and Division 2 patients than in dolichofacial patients. On the other hand, one should not expect enhancement of basal sagittal mandibular growth, regardless of the underlying vertical facial pattern. |
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Authors:
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Michael G Woods |
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Publication Detail:
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Type: Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics Volume: 133 ISSN: 1097-6752 ISO Abbreviation: Am J Orthod Dentofacial Orthop Publication Date: 2008 Mar |
Date Detail:
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Created Date: 2008-03-11 Completed Date: 2008-03-25 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8610224 Medline TA: Am J Orthod Dentofacial Orthop Country: United States |
Other Details:
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Languages: eng Pagination: 388-94 Citation Subset: D; IM |
Affiliation:
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Department of Orthodontics, School of Dental Science, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Victoria, Australia. mgwoods@unimelb.edu.au |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Analysis of Variance Cephalometry Child Dentition, Mixed Face / anatomy & histology* Female Humans Male Malocclusion, Angle Class II / therapy* Mandible / growth & development* Maxillofacial Development* Orthodontic Appliances Orthodontics, Corrective* / instrumentation Prospective Studies Statistics, Nonparametric |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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