Safety of the factory preset rotation angle of reciprocating instruments

Jin Woon Kim, Jung Hong Ha, Gary Shun Pan Cheung, Antheunis Versluis, Sang Won Kwak, Hyeon Cheol Kim

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Results The rotation angle at the beginning point of the plateau was significantly greater for a binding site farther away from the tip of the instrument for both systems (P <.05), and all were greater than 170°(preset in the dedicated motor from manufacturer). The ultimate strength and toughness also increased significantly at levels farther away from the instrument tip (P <.05). All specimens showed typical topographic features of torsional fracture, including the circular abrasion marks and fibrous dimples near the rotation center after the test.

Conclusions It was determined that the 2 brands of reciprocating files are safe when operated at the rotational angle in the proprietary motor.

Introduction This study aimed to investigate the torsional resistance of 2 reciprocating nickel-titanium instruments (Reciproc [VDW, Munich, Germany] and WaveOne [Dentsply Maillefer, Ballaigues, Switzerland]) operated at the maximum rotating angle in a proprietary motor.

Methods With the file tip secured at various levels (3, 4, or 5 mm) of Reciproc R25 and WaveOne Primary, the distortion angles and torsional loads were monitored during counterclockwise movement at 2 rpm until fracture (n = 10 at each level) for a load-distortion graph. The rotation angles and loads at the beginning point of the plateau, the ultimate torsional strength, final fracture angle, and toughness were determined. The data were analyzed using 1-way analysis of variance and the Tukey post hoc test at α =.05. The lateral longitudinal aspect and the fracture cross-section of each specimen were examined by scanning electron microscopy after the test.

Original languageEnglish (US)
Pages (from-to)1671-1675
Number of pages5
JournalJournal of Endodontics
Volume40
Issue number10
DOIs
StatePublished - Oct 1 2014

Fingerprint

Safety
Switzerland
Electron Scanning Microscopy
Germany
Analysis of Variance
Binding Sites
CMW cement
nitinol

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

Safety of the factory preset rotation angle of reciprocating instruments. / Kim, Jin Woon; Ha, Jung Hong; Cheung, Gary Shun Pan; Versluis, Antheunis; Kwak, Sang Won; Kim, Hyeon Cheol.

In: Journal of Endodontics, Vol. 40, No. 10, 01.10.2014, p. 1671-1675.

Research output: Contribution to journalArticle

Kim, Jin Woon ; Ha, Jung Hong ; Cheung, Gary Shun Pan ; Versluis, Antheunis ; Kwak, Sang Won ; Kim, Hyeon Cheol. / Safety of the factory preset rotation angle of reciprocating instruments. In: Journal of Endodontics. 2014 ; Vol. 40, No. 10. pp. 1671-1675.
@article{f2d6573a546645d5860a46a8d894a5c9,
title = "Safety of the factory preset rotation angle of reciprocating instruments",
abstract = "Results The rotation angle at the beginning point of the plateau was significantly greater for a binding site farther away from the tip of the instrument for both systems (P <.05), and all were greater than 170°(preset in the dedicated motor from manufacturer). The ultimate strength and toughness also increased significantly at levels farther away from the instrument tip (P <.05). All specimens showed typical topographic features of torsional fracture, including the circular abrasion marks and fibrous dimples near the rotation center after the test.Conclusions It was determined that the 2 brands of reciprocating files are safe when operated at the rotational angle in the proprietary motor.Introduction This study aimed to investigate the torsional resistance of 2 reciprocating nickel-titanium instruments (Reciproc [VDW, Munich, Germany] and WaveOne [Dentsply Maillefer, Ballaigues, Switzerland]) operated at the maximum rotating angle in a proprietary motor.Methods With the file tip secured at various levels (3, 4, or 5 mm) of Reciproc R25 and WaveOne Primary, the distortion angles and torsional loads were monitored during counterclockwise movement at 2 rpm until fracture (n = 10 at each level) for a load-distortion graph. The rotation angles and loads at the beginning point of the plateau, the ultimate torsional strength, final fracture angle, and toughness were determined. The data were analyzed using 1-way analysis of variance and the Tukey post hoc test at α =.05. The lateral longitudinal aspect and the fracture cross-section of each specimen were examined by scanning electron microscopy after the test.",
author = "Kim, {Jin Woon} and Ha, {Jung Hong} and Cheung, {Gary Shun Pan} and Antheunis Versluis and Kwak, {Sang Won} and Kim, {Hyeon Cheol}",
year = "2014",
month = "10",
day = "1",
doi = "10.1016/j.joen.2014.06.002",
language = "English (US)",
volume = "40",
pages = "1671--1675",
journal = "Journal of Endodontics",
issn = "0099-2399",
publisher = "Elsevier Inc.",
number = "10",

}

TY - JOUR

T1 - Safety of the factory preset rotation angle of reciprocating instruments

AU - Kim, Jin Woon

AU - Ha, Jung Hong

AU - Cheung, Gary Shun Pan

AU - Versluis, Antheunis

AU - Kwak, Sang Won

AU - Kim, Hyeon Cheol

PY - 2014/10/1

Y1 - 2014/10/1

N2 - Results The rotation angle at the beginning point of the plateau was significantly greater for a binding site farther away from the tip of the instrument for both systems (P <.05), and all were greater than 170°(preset in the dedicated motor from manufacturer). The ultimate strength and toughness also increased significantly at levels farther away from the instrument tip (P <.05). All specimens showed typical topographic features of torsional fracture, including the circular abrasion marks and fibrous dimples near the rotation center after the test.Conclusions It was determined that the 2 brands of reciprocating files are safe when operated at the rotational angle in the proprietary motor.Introduction This study aimed to investigate the torsional resistance of 2 reciprocating nickel-titanium instruments (Reciproc [VDW, Munich, Germany] and WaveOne [Dentsply Maillefer, Ballaigues, Switzerland]) operated at the maximum rotating angle in a proprietary motor.Methods With the file tip secured at various levels (3, 4, or 5 mm) of Reciproc R25 and WaveOne Primary, the distortion angles and torsional loads were monitored during counterclockwise movement at 2 rpm until fracture (n = 10 at each level) for a load-distortion graph. The rotation angles and loads at the beginning point of the plateau, the ultimate torsional strength, final fracture angle, and toughness were determined. The data were analyzed using 1-way analysis of variance and the Tukey post hoc test at α =.05. The lateral longitudinal aspect and the fracture cross-section of each specimen were examined by scanning electron microscopy after the test.

AB - Results The rotation angle at the beginning point of the plateau was significantly greater for a binding site farther away from the tip of the instrument for both systems (P <.05), and all were greater than 170°(preset in the dedicated motor from manufacturer). The ultimate strength and toughness also increased significantly at levels farther away from the instrument tip (P <.05). All specimens showed typical topographic features of torsional fracture, including the circular abrasion marks and fibrous dimples near the rotation center after the test.Conclusions It was determined that the 2 brands of reciprocating files are safe when operated at the rotational angle in the proprietary motor.Introduction This study aimed to investigate the torsional resistance of 2 reciprocating nickel-titanium instruments (Reciproc [VDW, Munich, Germany] and WaveOne [Dentsply Maillefer, Ballaigues, Switzerland]) operated at the maximum rotating angle in a proprietary motor.Methods With the file tip secured at various levels (3, 4, or 5 mm) of Reciproc R25 and WaveOne Primary, the distortion angles and torsional loads were monitored during counterclockwise movement at 2 rpm until fracture (n = 10 at each level) for a load-distortion graph. The rotation angles and loads at the beginning point of the plateau, the ultimate torsional strength, final fracture angle, and toughness were determined. The data were analyzed using 1-way analysis of variance and the Tukey post hoc test at α =.05. The lateral longitudinal aspect and the fracture cross-section of each specimen were examined by scanning electron microscopy after the test.

UR - http://www.scopus.com/inward/record.url?scp=84914122092&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84914122092&partnerID=8YFLogxK

U2 - 10.1016/j.joen.2014.06.002

DO - 10.1016/j.joen.2014.06.002

M3 - Article

VL - 40

SP - 1671

EP - 1675

JO - Journal of Endodontics

JF - Journal of Endodontics

SN - 0099-2399

IS - 10

ER -