A Comparative Study of Four Rotary Endodontic File Systems: Assessing Canal Transportation and Centering Ability using Cone-beam Computed Tomography

Abstract

Aim: The aim of this study was to compare the canal transportation and centering ability of four rotary endodontic file systems using cone-beam computed tomography (CBCT), Methodology: This was an in vitro study where 40 extracted single-rooted single canal human premolar teeth were used. CBCT scans of all the teeth were taken before instrumentation and were randomly divided into four groups, with 10 samples in each; Group I-Protaper Next (PN), Group II-Protaper Gold (PG), Group III-Neo Endo Flex (NE), and Group IV-Gen Endo (GE). After cleaning and shaping, the canals with respective file systems postinstrumentation scans were performed, and the two scans were compared to determine canal transportation and centering ability at 3, 6, and 9 mm, from the apex. Results: Statistical analysis was performed using the Kruskal–Wallis test where the results showed no statistically significant difference among the tested groups in canal transportation and centering ability at the coronal, middle, and cervical third (P > 0.05). Conclusion: Under the conditions of the in vitro study PN, PG, NE, and GE file systems exhibited comparable behavior in terms of canal transportation and centering ability, observational data suggested that Group 1 (PN) and Group 4 (GE) demonstrated superior centering ability and reduced canal transportation.

Keywords

• canal transportation
• centering ability
• cone-beam computed tomography
• genendo
• neoendoflex
• protaper gold
• protaper next