Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
J. Phys. IV France 03 (1993) C7-1065-C7-1067
Failure in a composite resin-dentin adhesive bondB. REZGUI1, H. ABDENNAGI1, S. SAHTOUT2 and M.S. BELKHIR2
1 Département de Génie Mécanique, Ecole Nationale d'Ingénieurs de Monastir, Route de Kairoun, 5019 Monastir Tunisie
2 Département d'Odontologie, Faculté de Chirurgie Dentaire de Monastir, Tunisie
Composites are drawing more and more attention as preferred materials for teeth restoration. The success of teeth restoration has been generally limited by the Composite Resin-Dentin bond strength. A testing device has been developped to allow a satisfactory testing mehod for evaluating bonding strength in tension and shear, which led to reproducible results . A comparaison between different bond systems has shown no significant difference in the tensile and the shear strength as well as in the fracture behavior. Moreover, results showed difference between tensile and shear strength, when considering one same bond system. Failure mode examination turned out to be, either cohesive (composite rupture), or adhesive (interface rupture) or both ( mixed rupture).
© EDP Sciences 1993