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Effect of different root canal sealers on fracture strength of simulated immature roots
Özgür İlke Atasoy Ulusoy1, Yelda Nayır, Sis Darendeliler-Yaman
1Faculty of Dentistry, Department of Restorative Dentistry and Endodontics, Gazi University, Ankara, Turkey. ilkeatasoy@yahoo.com
Objective:
The objective of this study was to compare the effects of different root canal sealers on fracture resistance of simulated immature teeth.
Study Design:
One hundred eight roots were divided into 9 groups. The roots were instrumented except the negative controls. Four millimeters of mineral trioxide aggregate (MTA) barriers were placed apically. The roots were backfilled as follows: group 1, AH Plus+gutta-percha; group 2, EndoREZ+gutta-percha; group 3, EndoREZ+Resilon; group 4, Hybrid Root SEAL+gutta-percha; group 5, Hybrid Root SEAL+Resilon; group 6, iRootSP+gutta-percha; group 7, iRootSP+Resilon; group 8, No obturation other than MTA barrier; group 9, No instrumentation, no obturation. A compressive loading was applied at a speed of 1 mm/min. Data were compared with ANOVA and Duncan tests.
Results:
Group 5 showed the highest resistance to fracture. The fracture values of group 3 were lower than those of the other experimental groups.
Conclusions:
Hybrid Root SEAL and iRootSP reinforce the simulated immature roots against fracture when used with either gutta-percha or Resilon.
