Cutting efficiency of two heat-treated files in rotation and reciprocation motions

Bulletin of the National Research Centre

Hala Fayek Khalil¹  Mohamed M. Kataia¹  Mohamed Mokhtar Nagy²  Engy M. Kataia³ 

[1] Endodontic Department, The British University in Egypt, Cairo, Egypt;Endodontics Department, Faculty of Dentistry, Ain Shams University, Cairo, Egypt;Restorative and Dental Materials Department, National Research Centre, Cairo, Egypt;

关键词: Rotation;    Reciprocation;    Cutting efficiency;    Heat treatment;   

DOI  :  10.1186/s42269-021-00579-x

来源: Springer

【 摘 要 】

BackgroundThis study aimed at assessing the effect of different kinematics as well as different instrument designs on efficiency of cutting of two heat-treated nickel–titanium systems. Forty resin canals with 30°-angle of curvature and a length of 16 mm were utilized in this research. They were divided into four groups depending on the instrument and the operating kinematic, group I; Azure rotary system in rotation motion, group II; Azure rotary system in Reciprocation motion, group III; Fanta AF One rotary system in rotation motion and group IV; Fanta AF One rotary system in reciprocation motion. Blocks were labeled and then weighed pre- and post-preparation with delta weight (Δ wt = wt pre − wt post) and data were documented for statistics evaluation.ResultsResin canals prepared using Fanta AF One rotary system showed significantly higher weight loss than Azure rotary system in both rotation and reciprocation (P < 0.001). Insignificant difference was reported for rotation and reciprocation movements in both file systems.ConclusionThe instrument’s cross section revealed a more significant impact on cutting efficiency than the motion used.

【 授权许可】

CC BY