The Effect of Enamel Surface Treated by Self-Etching Adhesive on Shear Bond Strength of Sealant

The Effect of Enamel Surface Treated by Self-Etching Adhesive on Shear Bond Strength of Sealant

Y. PUMKAJORN, P. BOONTIANG, W. VEERAPRAVATI, W. WISUTTISAK

Faculty of Dentistry, Srinakharinwirot University

 

Abstract

 

The objective of this study was to compare the effect of phosphoric acid and the self- etching adhesive on the shear bond strength of a light- curing sealant to unground bovine enamel. Bovine incisors were used in this study. The teeth were sectioned to  pieces which had more than 3 mm²  flat  unground enamel area. A light- curing resin sealant (Concise TM,3M ESPE) was bonded to the unground enamel surface following conditioning of the cleaned enamel with 37% phosphoric acid or with the self-etching primer adhesive (Clearfil SE Bond) (N= 35/ group) . Shear bond strengths were measured by Universal testing machine (Instron 5566) and failure mode was determined in a steromicroscope. Differences between groups were determined by Independent sample T- test. No statistically significant differences were  found (p< 0.05 ) between the phosphoric acid and the self- etching adhesive groups. The adhesive treatment had no influence on sealant’s  shear bond strength to ungrounded bovine enamel. The self- etching adhesive may be an attractive alternative to the acid etch technique for sealant application where simplifications in the procedure are warranted.