Influence of Five Different Root Canal Sealers on Root Fracture Susceptibility

Abstract

Aim:The purpose of the study was to compare the fracture resistance of roots filled with one of the following five root canal sealers: AH Plus, EndoRez, RealSeal, MTA Fillapex, and AcroSeal. The null hypothesis was that the type of root canal sealer would not influence the fracture resistance of root-filled teeth.Methods: Sixty-five maxillary central incisors were sectioned 1 mm below the cementoenamel junction (CEJ) to obtain roots 14 mm in length. Roots were subjected to chemomechanical preparation using the rotary instruments of the Profile system. The obturation of root canals was performed with the following filling materials (n = 12): group I: AH Plus and gutta-percha (GP), group II: EndoRez and GP, group III: RealSeal and GP, group IV: MTA Fillapex and GP, group V: AcroSeal and GP, group VI: roots were instrumented but not filled (control; n = 5). After the appropriate setting time, each root was embedded in acrylic resin. The specimens were then subjected to fracture resistance testing using an Instron testing machine at 1 mm/min. Conclusion:All of the root canal sealers used in this study increased the fracture resistance of instrumented root canals.