ADHESIVE BONDING OF FRAGMENTED ANTERIOR TEETH

This in vitro study investigated the fracture strengths of fractured i ncisors after reattachment to the remaining tooth structure, using eit her Gluma dentin-bonding agent together with 1 of 13 different experim ental resins or 1 of the following dentin-bonding agents: Gluma+ (expe rimental modification of Gluma), Panavia21, ScotchBondl (SingleBond), All-Bond2, :Dentastic, SuperBond, Prime&Bond 2.1. No significant diffe rences were found in the experiments with various experimental resins. The fracture strength of teeth rebonded with Gluma, All-Bond2, Dentas tic, SuperBond or Prime&Bond 2.1 showed mean fracture strengths in the range of 8.7-11.2 MPa, which were significantly different in all case s from that of intact teeth (16.3 MPa). Teeth bonded with Gluma+, Pana via21 or ScotchBond1 (SingleBond) showed mean fracture strengths of 15 .5, 14.6, and 14.2 MPa, respectively. The:se fracture strengths were n ot significantly different fr om that of intact teeth.