Resistance to fracture of teeth instrumented using novel EndoStar E5 rotary versus ProTaper NEXT and WaveOne file systems.

Aim: The current study compared the fracture resistance of samples instrumented by two rotary files and a reciprocating file, obturated with gutta-percha and AH Plus.

Materials And Methods: A total of 60 freshly extracted mandibular premolar teeth with single roots and single canals were acquired and decoronated at or below the cementoenamel junction. The samples were randomly divided into four groups ( = 15).

Influence of root canal obturation using gutta-percha with three different sealers on root reinforcement of endodontically treated teeth. An comparative study of mandibular incisors.

Aim: The purpose of this study was to evaluate the vertical force required to fracture mandibular incisor teeth, obturated using gutta-percha with three different sealers.

Materials And Methods: Seventy-five extracted mandibular incisors with intact and fully formed apices, exhibiting single root and canal were acquired. The teeth were decoronated obtaining a root segments of 15 mm and were divided into five groups ( = 15).

Effect of glide path preparation on apical extrusion of debris in root canals instrumented with three single-file systems: An comparative study.

Aim: The aim of this study was to test the effect of new protocol of glide path preparation by 20/0.04 rotary file on apical extrusion of debris when instrumenting fine curved mesial canals in mandibular molars with Self-adjusting File (SAF) and compare it to a glide path prepared by 20/0.02 hand K-file and rotary OneShape (OS) and reciprocating WaveOne (WO) file instrumentation.