Document Detail

Orthodontic treatment of anterior open-bite malocclusion: stability 10 years postretention.
MedLine Citation:
PMID:  20197159     Owner:  NLM     Status:  MEDLINE    
INTRODUCTION: The postretention stability of open-bite treatment is a controversial topic in orthodontics. METHODS: In this study, the lateral cephalometric radiographs of 64 patients treated with orthodontics alone were evaluated to determine the amount of postretention change. The mean postretention interval was 14 years. The sample was divided into 3 groups based on the amounts of pretreatment overbite: (1) the contact group (n = 24), incisal overlap and incisal contact; (2) the overlap group (n = 25), incisal overlap and no incisal contact; and (3) the open-bite group (n = 15), no incisal overlap. The headfilms were digitized, and the values were analyzed. RESULTS: The 3 groups reacted differently. During the postretention period, mean overbite deepened in all groups, with the contact group deepening significantly more than the open-bite group. Overjet increased significantly more in the open-bite group than in the contact group. Pretreatment overjet correlated mildly with postretention overjet relapse in the open-bite group. CONCLUSIONS: All 64 subjects had positive incisal overlap at the postretention recall.
Jay P Zuroff; Shih-Hsuan Chen; Peter A Shapiro; Robert M Little; Donald R Joondeph; Greg J Huang
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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 Mar 
Date Detail:
Created Date:  2010-03-03     Completed Date:  2010-03-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8610224     Medline TA:  Am J Orthod Dentofacial Orthop     Country:  United States    
Other Details:
Languages:  eng     Pagination:  302.e1-8; discussion 302-3     Citation Subset:  D; IM    
Copyright Information:
2010 American Association of Orthodontists. Published by Mosby, Inc. All rights reserved.
Private Practice, Kennewick, WA, USA.
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MeSH Terms
Follow-Up Studies
Malocclusion / therapy
Open Bite / therapy*
Orthodontics, Corrective / methods*
Recurrence / prevention & control
Treatment Outcome
Vertical Dimension

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