Document Detail


Palatal configuration in Class II Division 1 malocclusion: a longitudinal study.
MedLine Citation:
PMID:  20451785     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
INTRODUCTION: The purpose of this study was to evaluate palatal contours in nonextraction orthodontic treatment and long-term stability in patients with Class II Division 1 malocclusions. METHODS: Data were obtained from maxillary study models before treatment, after treatment, and at least 5 years postretention. Data were collected with a digital pantograph in the canine, second premolar, and first molar regions. Palatal width, base width, palatal height, and alveolar angle were evaluated. RESULTS: During treatment, the canine region was stable; in the premolar and molar regions, there were statistically significant increases in transverse (palatal and base widths) and palatal height measurements, whereas the alveolar angle decreased. In the postretention evaluation, the canine region showed the greatest modifications, except for alveolar angulation, which was stable. The premolar region showed stability, but, in the molar region, palatal width and alveolar angulation decreased. CONCLUSIONS: In analyzing alterations in the geometry of palatal configuration, we concluded that a favorable transverse gain of the palatal base, from growth or orthodontics, was important for stability. The transverse gain of palatal base width during Class II treatment is important to compensate for the expected transverse loss in the cervical region and the decrease of alveolar angle in the long term.
Authors:
Carla D'Agostini Derech; Arno Locks; Ana Maria Bolognese
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Publication Detail:
Type:  Journal Article    
Journal Detail:
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:  137     ISSN:  1097-6752     ISO Abbreviation:  Am J Orthod Dentofacial Orthop     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-10     Completed Date:  2010-07-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8610224     Medline TA:  Am J Orthod Dentofacial Orthop     Country:  United States    
Other Details:
Languages:  eng     Pagination:  658-64     Citation Subset:  D; IM    
Copyright Information:
Copyright (c) 2010 American Association of Orthodontists. Published by Mosby, Inc. All rights reserved.
Affiliation:
Department of Orthodontics, University of Brazil, Rio de Janeiro, Rio de Janeiro, Brazil. carladerech@hotmail.com
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Alveolar Process / pathology
Bicuspid / pathology
Cephalometry
Child
Cuspid / pathology
Dental Arch / pathology
Dental Models
Female
Follow-Up Studies
Humans
Longitudinal Studies
Male
Malocclusion, Angle Class II / pathology,  therapy*
Maxilla / pathology
Molar / pathology
Palate / growth & development,  pathology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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