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Debris retention and wear in three different nickel‐titanium rotary instruments
Author(s) -
Elmsallati Elham A.,
Wadachi Reiko,
Ebrahim Aqeel Khalil,
Suda Hideaki
Publication year - 2006
Publication title -
australian endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.703
H-Index - 34
eISSN - 1747-4477
pISSN - 1329-1947
DOI - 10.1111/j.1747-4477.2006.00029.x
Subject(s) - root canal , debris , nickel titanium , materials science , ultrasonic sensor , dentistry , metallurgy , geology , medicine , oceanography , shape memory alloy , radiology
The aim of this in vitro study was to compare three nickel‐titanium (Ni‐Ti) rotary instruments: EndoWave, K3 and ProFile, with respect to their debris retention and wear. Thirty simulated root canal models made from resin blocks with 40° canal curvature were used. They were divided into three groups of 10 samples each; EndoWave, K3 and ProFile were used in Groups A, B and C respectively. They were prepared with four serial size files. The weight of each file was measured to evaluate debris retention and wear at four representative time points: prior to root canal preparation (W1), immediately after root canal preparation (W2), after ultrasonic cleaning (W3), after further additional cleaning (W4). The weight of debris on each file after root canal instrumentation and ultrasonic cleaning was calculated as D1: (W2 – W4) and D2: (W3 – W4) respectively. Also, wear of the file was calculated as WF: (W1 – W4). There was a significant difference in the amount of debris remaining on the file among the three files; EndoWave retained more debris (D1) than K3 and ProFile ( P < 0.001, one‐way anova ). ProFile had the largest amount of debris (D2) remaining after ultrasonic cleaning ( P < 0.001). Wear was not detectable in this study. Under the conditions of this study, immediately after root canal preparation, EndoWave retained the largest amount of debris, while ProFile retained the most debris even after ultrasonic cleaning.