Rotary Nickel-Titanium GT and ProTaper Files for Root Canal Shaping by Novice Operators: A Radiographic and Micro–Computed Tomography Evaluation

Shaping Ability of Reciprocating Motion in Curved Root Canals: A Comparative Study with Micro–Computed Tomography

“…In this study, the changes of basic geometric parameters (canal curvature, volume, surface area, and SMI) under reciprocating motion preparation did not demonstrate any drastic differences when compared with continuous rotation or even with the result of previous studies (8,(18)(19)(20). When viewing the apical transportation at each level of cross-sectional images, both reciprocating motion and continuous rotation did not seem to show many differences.…”

Undergraduate Students Introduction to Manual and Rotary Root Canal Instrumentation

“…Most studies have evaluated the performance of these systems as used by experienced professionals 10) . However, many general practitioners have little experience of performing endodontic treatment with mechanical instrumentation 6,13) . Although NiTi rotary systems are widely used, not all universities teach this kind of instrumentation in undergraduate programs.…”

“…The resistance to teaching rotary instrumentation to undergraduate students is mainly related to the fear that the student will not able to do it properly and the possibility of instrument fractures, since the student might not be able to properly control the movement of the instrument rotating 360° inside the root canal 22) . Few studies have assessed the ability of undergraduate students with no previous experience with endodontic instrumentation comparing manual and rotary techniques 6,22) . Therefore, the aim of this study was to evaluate the performance of undergraduates in their first contact with manual and rotary root canal instrumentation in relation to the crosssectional area of the root canal, time spent in preparation and occurrence of accidents.…”

First Experience of Rotary Nickel Titanium Root Canal Instrumentation Performed by Undergraduate Students and General Dentists

“…Among the various factors which influence the outcome of root canal treatment, removal of bacteria, debris and organic tissues through chemo-mechanical preparation has been recognized as the most important one [1,2] . A variety of instruments and techniques in combination with disinfecting irrigation solutions and endodontic dressings have been proposed for the chemo-mechanical preparation of root canals.…”