title: Effect of surface area and air-drying distance on shear bond strength of etch-and-rinse adhesive.
abstract: 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.
authors: Operative Dentistry Department, Faculty of Dentistry, Ain Shams University, Cairo, Egypt. faridelaskary@asfd.asu.edu.eg
authors: Farid Mohammed Sabry
authors: FM
authors: El-Askary
authors: Mohammed Salah Abdelaziz
authors: MS
authors: Nassif
authors: Andrea Mello
authors: AM
authors: Andrade
authors: Alessandra
authors: A
authors: Reis
authors: Alessandro Dourado
authors: AD
authors: Loguercio
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods; D000388:Air; D000818:Animals; D002417:Cattle; D003188:Composite Resins / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods*; D003804:Dentin / Q000737:chemistry*; D057133:Dentin Desensitizing Agents / Q000737:chemistry*; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D033081:Shear Strength; D013499:Surface Properties; D013718:Tensile Strength; D014082:Tooth Fractures
chemical_list: D003188:Composite Resins; D057133:Dentin Desensitizing Agents