Document Detail

Stability of quad-helix/crib therapy in dentoskeletal open bite: A long-term controlled study.
MedLine Citation:
PMID:  23631971     Owner:  NLM     Status:  In-Data-Review    
INTRODUCTION: The purpose of this study was to evaluate the long-term stability of quad-helix/crib treatment in subjects with dentoskeletal open bite.
METHODS: Twenty-eight subjects (11 boys, 17 girls; mean age, 8.2 ± 1.3 years) were treated consecutively with quad-helix/crib appliances. The patients were reevaluated at the end of active treatment with the quad-helix/crib (mean age, 9.7 ± 1.6 years) and at least 5 years after the completion of treatment (mean age, 14.6 ± 1.9 years). A control group of 20 untreated subjects with the same dentoskeletal disharmony was used for the statistical comparison (Mann-Whitney U test).
RESULTS: In the long term, the quad-helix/crib group showed a significant reduction in the ANB angle (-1.3°), a downward rotation of the palatal plane (1.8°), a greater increase in overbite (2.1 mm), and a decrease in overjet (-1.5 mm) when compared with the controls.
CONCLUSIONS: In the long term, the use of the quad-helix/crib appliance led to successful outcomes in about 93% of the patients considered. Correction of dentoskeletal open bite was associated with a clinically significant downward rotation of the palatal plane.
Manuela Mucedero; Lorenzo Franchi; Veronica Giuntini; Andrea Vangelisti; James A McNamara; Paola Cozza
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:  143     ISSN:  1097-6752     ISO Abbreviation:  Am J Orthod Dentofacial Orthop     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-05-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8610224     Medline TA:  Am J Orthod Dentofacial Orthop     Country:  United States    
Other Details:
Languages:  eng     Pagination:  695-703     Citation Subset:  D; IM    
Copyright Information:
Copyright © 2013 American Association of Orthodontists. Published by Mosby, Inc. All rights reserved.
Research fellow, Department of Orthodontics, University of Rome "Tor Vergata," Rome, Italy.
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