Poster 593, Sprache: EnglischMustafa, Ammar A. / Junaidi, M. Termidzi / Khalil, Maan Ibrahim / Akhtaruzzaman, MohdThe current study was to investigate the early shear bonding strength of two types of bonding agents on different tooth substrates and to compare the results by SEM, AFM and microradiography. Bonding strength of two bonding agents; 3M ADPER Single Bond and OptiBond Solo adhesive system Kerr were investigated at three periods on enamel, prepared enamel and prepared dentin of 240 teeth by Universal testing machine. Specimens were tested under SEM for the measurement of embedment of the bonding material into the tubules of the substrate. The same specimens were reevaluated by AFM and micro-radiography. Shear bond strength test found no significant differences among the tissues or adhesive systems. The Single Bond system formed an authentic hybrid layer that can ensure adequate adhesion. OptiBond Solo showed bonding of composite to dentin and enamel reinforced by mechanical interlocks of the hybrid layer. SEM gave the better reliable image to estimate intrusion of the polymer into dentinal tubules.
Schlagwörter: shear bond strength, bonding agents, SEM, AFM, 2D optical analyser