Influence of additional etching on shear bond strength of self-etching adhesive system to enamel

摘要: Recently, self-etching adhesive system has been introduced to simplify the clinical bonding procedures. It is less acidic compared phosphoric acid, thus there doubt whether this enough bond strength enamel. The purpose of study was investigate influence additional etching on adhesion resin composite Ninety extracted bovine permanent anterior teeth were used. labial surfaces crown ground with 600-grit abrasive paper under wet condition. randomly divided into six groups 15 each. Clearfil SE Bond � , Adper ™ used as primers. Each primers applied in both enamel specimens and without etching. For groups, surface pretreated 32% acid (UNI-ETCH, Bisco, Inc., Schaumburg, IL, USA). Hybrid AP-X, (Kuraray Co., Ltd., Osaka, Japan) packed mold light-cured for 40 seconds. Twenty-four hours after storage, tested shear strength. data each group subjected independent t - test at p 0.01). In conclusion, weak seems have higher etching, while strong not. [J