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Background.  Vertical root fracture might occur during root canal preparation, obturation, post procedures or endodontic treatment.  Methods.  Fifty-four single-rooted human teeth were decoronated to obtain a standardized length. The root canals were enlarged up to #50 and obturated with gutta-percha and root canal sealer. Eighteen teeth were used as a control group, and vertical root fracture was induced in the remaining teeth. The samples were randomly divided into three groups, as follows: control group (without vertical root fracture), Super-Bond C&amp;B group (fragments were attached with Super-Bond C&amp;B), and self-adhesive dual-cured resin cement group (fragments were attached with self-adhesive dual-cured resin cement). Each specimen was subjected to a fracture resistance test, and data were statistically analyzed using chi-squared test, one-way ANOVA and post hoc Tukey tests (P=0.05).  Results.  The fracture resistance values of the control and Super-Bond C&amp;B groups were higher than those of the self-adhesive dual-cured resin cement group (P&lt;0.05). However, there were no significant differences between the control and Super-Bond C&amp;B groups (P&gt;0.05).  Conclusion.  Within the limitations of the present study, Super-Bond C&amp;B was beneficial in obtaining higher fracture resistance in endodontically treated roots with vertical root fracture.

Effect of Super-Bond C&B and self-adhesive dual-cured resin cement on the fracture resistance of roots with vertical root fracture