Document Detail

Effects of etchants and primers on shear bond strength of a self-ligating esthetic orthodontic bracket.
MedLine Citation:
PMID:  18005827     Owner:  NLM     Status:  MEDLINE    
INTRODUCTION: Damon 3 orthodontic brackets (Ormco, Orange, Calif), combining a self-ligating bracket with a composite bracket pad were the subject of an in-vitro bonding study to determine the shear bond strength to enamel and adhesive remaining on the teeth with various enamel and bracket preparation procedures. METHODS: A 3 x 2 factorial design was selected with the following factors as variations of the enamel preparation: liquid phosphoric acid etchant followed by primer (Ortho Solo; Ormco), gel phosphoric acid etchant followed by primer, and self-etching primer (Transbond Plus; 3M Unitek, Monrovia, Calif). The second factor was a primer (Ortho Solo) either applied to the bracket pad or absent as a control. RESULTS: No statistically significant differences were observed in shear bond strengths, with group average estimates ranging from 14.5 to 16.6 MPa. Debonding predominantly occurred at the bracket-pad interface with no significant differences in adhesive remaining on the teeth. CONCLUSIONS: This in-vitro study indicated that self-etching primer, gel etchant, and liquid etchant produce equal and sufficient bond strengths. Furthermore, application of primer to the bracket pad does not improve bond strength.
Robert Chalgren; Edward C Combe; Andrew J Wahl
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, N.I.H., Extramural    
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:  132     ISSN:  1097-6752     ISO Abbreviation:  Am J Orthod Dentofacial Orthop     Publication Date:  2007 Nov 
Date Detail:
Created Date:  2007-11-16     Completed Date:  2007-12-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8610224     Medline TA:  Am J Orthod Dentofacial Orthop     Country:  United States    
Other Details:
Languages:  eng     Pagination:  577.e1-5     Citation Subset:  D; IM    
School of Dentistry, University of Minnesota, Minneapolis 55455, USA.
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MeSH Terms
Acid Etching, Dental
Dental Bonding / methods*
Dental Stress Analysis
Dentin-Bonding Agents
Esthetics, Dental
Molar, Third
Orthodontic Brackets*
Resin Cements
Shear Strength
Grant Support
Reg. No./Substance:
0/Blugloo; 0/Dentin-Bonding Agents; 0/OrthoSolo; 0/Resin Cements; 0/Transbond Plus Self-Etching Primer

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

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