Abstract

Statement of the Problem: fracture of anterior teeth are unpleasant experiences for children and they necessitate to be treated as soon as possible This study aimed at comparing fracture strength of sound teeth with teeth reattached with two different materials. Materials and Method: 24 sound central incisor teeth fractured by an axial load imposed on buccal area were divided in two groups. Third group included 12 sound teeth. Teeth were restored as: reattached with dual cure cement, reattached with flowable composite and sound teeth considered as control. Teeth were fractured due to pushing pressure on lingual area. Required force for fracture of each sample was recorded. Average force rate for first, second and third groups were 548.17 N, 498.75 N, and 858.25 N, respectively. Results: Results suggest a significant difference between average rate of first group with control group and that of the second group with control, but average rate of group 1 and group 2 had no significant difference. Conclusion: Material combination used to reattach the fragments did not play an important role in the fracture strength.