Impact of cooling on shaping ability of thermally treated files in canal models with double curvature

PeerJ

article

Ahmed Jamleh¹  Hajar Albanyan¹  Ali Alaqla¹  Hamad Alissa¹  Nawaf Alshetan³  Sulaiman Alraffa³  Abdulmohsen Alfadley¹ 

[1] Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences;King Abdullah International Medical Research Center;Dr. Sulaiman Al-Habib Medical Group

关键词: Cooling;    Double curvature;    ProTaper Next;    Shaping ability;    Torque;    ZenFlex;   

DOI  :  10.7717/peerj.15830

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

BackgroundThis study compared the ability of thermally treated files in shaping simulated canals with double curvature. Fifty-six canals were enlarged to a final size of 25 with ProTaper Next (PTN) or ZenFlex (ZF).MaterialsHalf of the samples were shaped with cooled files (n = 14 each). The amount of removed resin was measured and canal deviation was determined at eight levels. Shaping time and maximum shaping torque values were also recorded. Data were statistically analyzed using analysis of variance and LSD, Kruskal–Wallis, and chi-square tests at a 0.05 significance level.ResultsCompared to PTN and cooled PTN, ZF and cooled ZF required lesser time to shape the canals. The maximum torques were found comparable between the groups. All the groups generated negligible deviations at every canal level evaluated and maintained the canal geometry. Although not significant, the cooled PTN and ZF files exhibited lesser canal deviations than their counterparts.ConclusionAll groups demonstrated similar shaping ability whilst maintaining the original curvature of the canal in simulated canals with double curvature. However, ZF groups were able to shape the canals faster than PTN groups. There was a trend that cooled files made lesser canal deviations compared to their counterparts.

【 授权许可】

CC BY