Document Detail

Comparison of three-dimensional orthodontic load systems of different commercial archwires for space closure.
MedLine Citation:
PMID:  21879793     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To experimentally quantify the effects of the loop design on three-dimensional orthodontic load systems of two types of commercial closing loop archwires: Teardrop and Keyhole.
MATERIALS AND METHODS: An orthodontic force tester and custom-made dentoform were used to measure the load systems produced on two teeth during simulated space closure. The system included three force components along and three moment components about three clinically defined axes on two target teeth: the left maxillary canine and the lateral incisor. The archwires were attached to the dentoform and were activated following a standard clinical procedure.
RESULTS: The resulting six load components produced by the two archwires were reported and compared. The results were also compared with those of the T-loop archwire published previously.
CONCLUSIONS: The three designs deliver similar loading patterns; however, the component magnitudes are dependent on the design. All of the designs result in lingual tipping of the teeth, canine lingual-mesial displacement, canine crown-mesial-in rotation, and incisor crown-distal-in rotation.
Steven Gajda; Jie Chen
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, N.I.H., Extramural     Date:  2011-08-31
Journal Detail:
Title:  The Angle orthodontist     Volume:  82     ISSN:  1945-7103     ISO Abbreviation:  Angle Orthod     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-03-13     Completed Date:  2012-08-16     Revised Date:  2014-08-19    
Medline Journal Info:
Nlm Unique ID:  0370550     Medline TA:  Angle Orthod     Country:  United States    
Other Details:
Languages:  eng     Pagination:  333-9     Citation Subset:  D; IM    
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MeSH Terms
Computer Simulation
Cuspid / anatomy & histology
Dental Models
Dental Stress Analysis / instrumentation
Incisor / anatomy & histology
Materials Testing
Models, Biological
Orthodontic Appliance Design*
Orthodontic Brackets
Orthodontic Space Closure / instrumentation*
Orthodontic Wires*
Stress, Mechanical
Surface Properties
Grant Support

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

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