Open AccessApical transportation in simulated root canals prepared using HyFlex CM, WaveOne Gold and manual technique
Author(s) -
Gabriela Bonacina,
Maína de Aguiar Pinto,
Maximiliano Schünke Gomes,
Rafael Chies Hartmann,
Maristela Gutierres de Borba,
Ana Carolieis Cifali
Publication year - 2020
Publication title -
rfo upf/revista da faculdade de odontologia
Language(s) - English
Resource type - Journals
eISSN - 2318-843X
pISSN - 1413-4012
DOI - 10.5335/rfo.v24i3.9589
Subject(s) - reciprocating motion , post hoc , root canal , orthodontics , mathematics , materials science , dentistry , medicine , computer science , bearing (navigation) , artificial intelligence
Objective: To assess the apical transportation in simulated root canals with different curvature angles prepared using manual instrumentation and rotary and reciprocating motions. Methods: Sixty simulated root canals were prepared using manual instrumentation (Flexofile K-file) (MT), continuous rotation (HyFlex CM) (HF), and reciprocating motion (WaveOne Gold) (WG). A trained operator prepared the canals, and the apical enlargement was standardized up to a #25 file in all systems tested. Two different curvature angles of the simulated root canals were tested: 70° and 50°. Overlapping photographs of the simulated root canals, before and after root canal preparation, were used to measure the apical transportation (mm), using the ImageJ software. Descriptive statistics (mean and standard deviation) were analyzed and the groups were compared with two-way ANOVA followed by Tukey’s post-hoc, with α=5%. Results: There was a statistically significant interaction between the effects of group and angle in the apical transportation (F = 3.740; p = 0.031). Simple main effects analysis showed that HyFlex CM produced a significantly lower apical transportation when compared to WaveOne Gold (p = 0.02) and the manual technique (p 0.05). The group with the highest mean apical transportation was the MT, with 0.0917 mm, followed by WG and HF, with 0.0633 and 0.0325, respectively. Conclusion: Simulated root canals prepared with rotary motion (HyFlex CM) showed the lowest apical transportation, followed by the reciprocating motion (WaveOne Gold). The manual technique showed the most unfavorable results, with the highest apical transportation.