Document Detail

Cephalometric changes during treatment with the open bite bionator.
MedLine Citation:
PMID:  1558066     Owner:  NLM     Status:  MEDLINE    
Lateral cephalometric radiographs of 39 patients who were treated with an open bite bionator, also known as a "bionator to close the bite," were obtained from six private orthodontic practices. Comparisons of pretreatment cephalometric values with published standards indicate that clinicians do not generally use this appliance for patients who have marked excessive anterior vertical dimension. Rather, the cases appear to be Class II with mild anterior open bites or with some indication of open bite tendency, such as a steep mandibular plane angle. Changes in cephalometric values during treatment with the appliance were compared with normal growth standards. Patients exhibited a reduction in facial convexity and overjet, reduced eruption of maxillary molars, and less of an increase in facial height than expected. The appliance appears to be effective for Class II correction in patients who require control or improvement of moderately excessive vertical dimension.
J R Weinbach; R J Smith
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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:  101     ISSN:  0889-5406     ISO Abbreviation:  Am J Orthod Dentofacial Orthop     Publication Date:  1992 Apr 
Date Detail:
Created Date:  1992-05-06     Completed Date:  1992-05-06     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  8610224     Medline TA:  Am J Orthod Dentofacial Orthop     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  367-74     Citation Subset:  D; IM    
Department of Orthodontics, Washington University School of Dental Medicine, St. Louis, Mo.
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MeSH Terms
Activator Appliances*
Malocclusion / therapy*
Maxillofacial Development*
Reference Values
Vertical Dimension

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

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