Document Detail


Effect of light-curing units in shear bond strength of metallic brackets: an in vitro study.
MedLine Citation:
PMID:  20379684     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: To determine the influence of the light curing units on the shear bond strength of orthodontic brackets.
MATERIAL AND METHODS: Seventy-two premolars were divided into six groups (n=12): Group I: brackets bonded with Transbond and polymerization with halogen light; Group II: Transbond and LED; Group III: Fuji Ortho and halogen light; Group IV: Fuji Ortho and LED; Group V: Fuji Ortho, without acid and halogen light; Group VI: Fuji Ortho, without acid and LED. The groups were tested to shear strength in a universal testing machine at a crosshead speed of 0.5 mm/min. Data were analyzed statistically by ANOVA and Tukey's test.
RESULTS: The composite resin presented higher shear bond strength than the resin-modified glass ionomer cement (p<0.05). The halogen light and LED sources produced similar shear bond strength (p>0.05).
CONCLUSION: The shear bond strength was influenced by the material but not by the light-curing unit. The use of LED reduced the experimental time by approximately 60%, with the same curing efficiency.
Authors:
Luciana Borges Retamoso; Niége Michelle Lazzari Onofre; Luciane Hann; Ernani Menezes Marchioro
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Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Journal of applied oral science : revista FOB     Volume:  18     ISSN:  1678-7765     ISO Abbreviation:  J Appl Oral Sci     Publication Date:    2010 Jan-Feb
Date Detail:
Created Date:  2010-04-09     Completed Date:  2010-07-15     Revised Date:  2010-12-02    
Medline Journal Info:
Nlm Unique ID:  101189774     Medline TA:  J Appl Oral Sci     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  68-74     Citation Subset:  D; IM    
Affiliation:
Pontifical Catholic University of Rio Grande do Sul, Curitiba, PR, Brazil. retamosolb@gmail.com
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MeSH Terms
Descriptor/Qualifier:
Acid Etching, Dental
Acrylic Resins / chemistry
Aluminum Silicates / chemistry
Composite Resins / chemistry
Curing Lights, Dental* / classification
Dental Alloys / chemistry*
Dental Bonding*
Dental Cements / chemistry*
Dental Stress Analysis / instrumentation
Glass Ionomer Cements / chemistry
Humans
Orthodontic Brackets*
Polymers / chemistry
Radiation Dosage
Resin Cements / chemistry
Shear Strength
Stainless Steel / chemistry
Stress, Mechanical
Surface Properties
Time Factors
Chemical
Reg. No./Substance:
0/Acrylic Resins; 0/Aluminum Silicates; 0/Composite Resins; 0/Dental Alloys; 0/Dental Cements; 0/Fuji Ortho; 0/Glass Ionomer Cements; 0/Polymers; 0/Resin Cements; 0/Transbond XT; 12597-68-1/Stainless Steel

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


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