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One‐Year Tensile Bond Strengths of Two Self‐Etching Primers to Bovine Enamel
Author(s) -
MIGUEZ PATRICIA A.,
PEREIRA PATRICIA N.R.,
SWIFT EDWARD J.
Publication year - 2004
Publication title -
journal of esthetic and restorative dentistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.919
H-Index - 60
eISSN - 1708-8240
pISSN - 1496-4155
DOI - 10.1111/j.1708-8240.2004.tb00044.x
Subject(s) - enamel paint , bond strength , materials science , adhesive , composite material , primer (cosmetics) , etching (microfabrication) , ultimate tensile strength , dentistry , medicine , chemistry , organic chemistry , layer (electronics)
Purpose:: The purpose of this study was to evaluate the enamel bond strengths of two self‐etching primer systems and a total‐etch self‐priming adhesive system at 24 hours and after a 1‐year period of storage in water at 37°C. Materials and Methods: An experimental self‐etching priming system (ABF, Kuraray Medical, Tokyo, Japan), Clearfil™ SE Bond (Kuraray), and One‐Step® (Bisco, Schaumburg, IL, USA) were used as the adhesive systems. Eleven bovine incisors stored frozen were ground with 600‐grit SiC paper, bonded as recommended by the manufacturers, and restored with Clearfil™ AP‐X (Kuraray) or Renew® (Bisco). After 24 hours in water at 37°C, the teeth were sectioned into 0.7 mm‐thick slabs that were trimmed and tested for microtensile bond strength using a tabletop tester (EZ test, Shimadzu, Kyoto, Japan) at a crosshead speed of 1 mm/min. Alternate slices were either tested at 24 hours or kept in an incubator at 37°C for 1 year prior to testing. The data were analyzed using paired t ‐test ( p < .05). Results: Differences in bond strengths were not significant at 24 hours. After 1 year, ABF and Clearfil k SE Bond had significantly higher mean bond strengths than at 24 hours ( p < .001). Conclusions: Enamel bond strengths of the total‐etch two‐step adhesive remained stable, and the bond strengths of the two self‐etching primer systems increased with time.