Bonding to electrically treated dentin surface

Abstract

This study was designed to investigate the effectiveness of the newly introduced electrically assisted bonding technique in bonding of the etch­ and-rinse adhesive and the self-etch adhesive system to dentin and its efficiency over time. One-hundred sixty eight extracted permanent human premolars were selected for the study. A total of 120 premolar teeth were used for the microshear bond testing procedures while the remaining 48 premolars were used for ultra-morphological examination resin-dentin interface. For the microshear bond strength testing teeth were divided into two main groups (60 teeth each) either etch-and-rinse bonding system; Adper Single Bond 2 (!3 1 ) or One self-etch bonding system; i\dper Easy One (132 ).The selected teeth were embedded in resin blocks and ground to

expose flat dentin surface. The adhesive was applied as per manufacturer's instructions. The teeth were subdivided into three subgroups (20 teeth each) according to the intensity of the electric current passing through the circuit: 10-nO current, 11 -low current of20 fli\mp, 12- High current of 40 flAmp. i\n applicator wired through an electric circuit is passed over the adhesive layer in a whipping motion for 30 seconds.