Negotiating the second mesiobuccal canal: A comparison of nickel titanium files through the experience of undergraduate dental students

Objectives The aim of this study was to compare the ability of undergraduate students to reach working length (WL) in second mesiobuccal root canals (MB2) of maxillary first molars (n = 210) by using Reciproc Blue without glide path preparation, and One Curve with glide path preparation. Methods The students (n = 105) attended theoretical and practical courses. The first group (n = 53) shaped MB2 root canals using the One Curve system and then Reciproc Blue; the second group (n = 52) shaped MB2 root canals following the reverse sequence. Participants completed a questionnaire. The chi‐square and Mann–Whitney U test were used for statistical analysis using significance of p 0.05). Treatment time was shorter in Reciproc Blue (p