Effect of surface area and air-drying distance on shear bond strength of etch-and-rinse adhesive

We evaluated the effects of air-drying distance and bond surface area on the shear bond strength of a 2-step etch-and-rinse adhesive. A total of 120 bovine anterior teeth were equally divided into 6 main groups based on bonding surface area. The main groups were divided into sub-groups (n = 5) accor...

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Bibliographic Details
Published in:Brazilian oral research 2012-09, Vol.26 (5), p.418-423
Main Authors: El-Askary, Farid Mohammed Sabry, Nassif, Mohammed Salah Abdelaziz, Andrade, Andrea Mello, Reis, Alessandra, Loguercio, Alessandro Dourado
Format: Article
Language:English
Subjects:
Acid Etching, Dental - methods
Air
Animals
Cattle
Composite Resins - chemistry
Dental Bonding - methods
Dentin - chemistry
Dentin Desensitizing Agents - chemistry
Dentin-Bonding Agents
Dentistry
DENTISTRY, ORAL SURGERY & MEDICINE
Material Testing
Materials Testing
Microscopy, Electron, Scanning
Shear Strength
Surface Properties
Tensile Strength
Tooth Fractures
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Summary:We evaluated the effects of air-drying distance and bond surface area on the shear bond strength of a 2-step etch-and-rinse adhesive. A total of 120 bovine anterior teeth were equally divided into 6 main groups based on bonding surface area. The main groups were divided into sub-groups (n = 5) according to air-drying distance. The shear strength was determined using a universal testing machine at a crosshead speed of 0.5 mm/min. The averaged results were subjected to two-way ANOVA and Tukey's test (α = 0.05). Two-way ANOVA testing identified no significant cross-product interactions (p > 0.05), but the main factors of area (p < 0.0001) and air-drying distance (p < 0.00001) significantly affected the mean bond strength. Shorter air-drying distances improved bond strength, and increased surface area decreased the bond strength.
ISSN:1807-3107
1806-8324
1807-3107
DOI:10.1590/s1806-83242012005000013