Objective: This study determined the effect of caries detecting dyes on shear bond strength (SBS) of composite resin to dentine and examined the debonded surface topography. Method: Sixty intact recently extracted molars were sterilized with Gamma radiation and mounted in acrylic resin bases. Teeth were divided into control group (20 molars) and experimental group (40 molars). They were further subdivided according to the type of caries detecting dye and the type of adhesive system used. The buccal surfaces of molars were grinded to remove enamel and expose flat surfaces of dentin. Two different caries detecting dyes were used Seek (Ultradent, USA) and SableSeek (Ultradent, USA), followed by application of either Excite (Ivoclar Vivadent, Liechtenstein) or AdheSE (Ivoclar Vivadent, Liechtenstein) according to the manufacturer's instructions. Cylinder specimens 2mm thick and 3mm diameter were prepared from Tetric Ceram composite (Ivoclar Vivadent, Liechtenstein) on each specimen....
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