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1. Effect of light-curing units in shear bond strength of metallic brackets: an in vitro study

Author

Luciana Borges Retamoso, Niége Michelle Lazzari Onofre, Luciane Hann, and Ernani Menezes Marchioro

Subjects
Shear bond strength, Halogen light, LED, Brackets, Dentistry, RK1-715
Abstract

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 (p0.05). 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.

Published
2010
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2. Effect of light-curing units in shear bond strength of metallic brackets: an in vitro study

Author

Ernani Menezes Marchioro, Niége Michelle Lazzari Onofre, Luciana Borges Retamoso, and Luciane Hann

Subjects
inorganic chemicals, Dental Stress Analysis, Curing Lights, Dental, Time Factors, Orthodontic Brackets, Polymers, Surface Properties, Brackets, Composite number, Acrylic Resins, Glass ionomer cement, Halogen light, Dental Cements, Dentistry, Radiation Dosage, Composite Resins, Crosshead, law.invention, Metal, Acid Etching, Dental, law, Humans, Composite material, General Dentistry, Curing (chemistry), Universal testing machine, business.industry, Chemistry, Shear bond strength, LED, Dental Bonding, Original Articles, Stainless Steel, Resin Cements, lcsh:RK1-715, Halogen lamp, Polymerization, Glass Ionomer Cements, visual_art, lcsh:Dentistry, visual_art.visual_art_medium, Aluminum Silicates, Stress, Mechanical, Shear Strength, business, Dental Alloys
Abstract

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 (p0.05). 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.

Published
2010

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