Effect of dentine cutting efficiency on the lateral force created by torque‐controlled rotary instruments

Aim To study the impact of dentine cutting efficiency of rotary instruments on the lateral force they create when instrumenting simulated root canals in bovine dentine. Methodology Lateral cutting efficiency of austenitic files (ProTaper Universal) was compared to that of counterparts of a reported...

Full description

Saved in:
Bibliographic Details
Published in:International endodontic journal 2020-08, Vol.53 (8), p.1153-1161
Main Authors: Deari, S., Zehnder, M., Al‐Jadaa, A.
Format: Article
Language:English
Subjects:
austenite
Dentistry
Efficiency
Endodontics
intracanal lateral force
martensite
Nickel
Premolars
root canal
Root canals
Titanium
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Aim To study the impact of dentine cutting efficiency of rotary instruments on the lateral force they create when instrumenting simulated root canals in bovine dentine. Methodology Lateral cutting efficiency of austenitic files (ProTaper Universal) was compared to that of counterparts of a reported identical geometrical design with a martensite phase component (ProTaper Gold) in bovine dentine disks (n = 6). Instrument shapes were studied using digital microscopy. The intracanal lateral force exerted by the two systems in simulated premolars (n = 9) made from bovine incisor roots containing a standardized narrow root canal of 16 mm length was monitored using a testing apparatus equipped with a torque‐controlled endodontic motor/handpiece. Data were compared using parametric statistics, alpha error = 0.05. Results The geometrical design of the two systems under investigation was found to be identical. The martensitic nickel‐titanium rotary files had a significantly (t‐test, P 
ISSN:0143-2885
1365-2591
DOI:10.1111/iej.13319