OBJECTIVE This study was designed to quantitatively evaluate the amount of dentin debris extruded from the apical foramen by comparing the conventional sequence of the ProTaper Universal nickel-titanium (NiTi) files with the single-file ProTaper F2 technique. STUDY DESIGN Thirty mesial roots of lower molars were selected, and the use of different instrumentation techniques resulted in 3 group...

introduction: this study aimed to perform a rigorous sample standardization and also evaluate the preparation of mesiobuccal (mb) root canals of maxillary molars with severe curvatures using two single-file engine-driven systems (waveone with reciprocating motion and oneshape with rotary movement), using micro-computed tomography (micro-ct). methods and materials: ten mb roots with single canal...

Introduction: the in vitro study compared dynamic cyclic fatigue resistance of 3 reciprocating NiTi files with heat treatment. Methods: we distributed 30 new endodontic three groups. The selected for this experiment were: AF Blue R3 25/06 (AFB) (Fanta Dental, Shanghai, China), X1 File (X1B) (MK Life, Porto Alegre, RS, Brazil), and Reciproc 08/25 (RB) (VDW, Munich, Germany. We measured time to f...

the aim of ideal canal preparation is to prevent iatrogenic aberrations such as transportation. the aim of this study was to evaluate the root canal transportation by reciproc file with and without glide path.thirty acrylic-resin blocks with a curvature of 60° and size#10 (2% taper) were assigned into two groups (n= 15). in group 1, the glide path was performed using stainless steel k-files siz...

Background: To compare and evaluate the amount of apically extruded debris using root canal instrumentation. Materials methods: A total 15 mandibular first premolars were enrolled. They divided into 3 groups (n = 5 teeth/group). The canals instrumented according to manufacturers’ instructions Reciprocating single-file system Wave One™ full-sequence rotary Hyflex CM™ ProTaper™ instruments. p- va...