Three-dimensional analysis of cutting behavior of nickel-titanium rotary instruments by microcomputed tomography

Journal of Endodontics
Ya Shen, Markus Haapasalo

Abstract

The cutting behavior of nickel-titanium rotary instruments with and without irrigation was evaluated in a bovine bone model. Six brands of NiTi rotary instruments were constrained into a curved trench. The tips of the instruments were bent to create a 1-mm long initial contact with the floor of the trench. After a series of 100, 200, 300, 400, and 500 (1,500 total) push-pull strokes on each rotating instrument, the grooves were scanned by microcomputed tomography. The volume of removed material and the maximum depth of the cut groove were measured. Irrigation increased the cutting efficiency of the instruments significantly, except for Liberator (Li). There was a significant correlation between the extracted volume and the maximum depth. The volume removal rate was highest with K3 and Li (dry) and with K3 and FlexMaster (FM) (irrigation group). The maximum cutting depth was highest with FM and K3 in both dry and irrigation groups. The cutting behavior of NiTi rotary instruments depends both on experimental setup, instrument design, and cutting condition.

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Citations

Mar 8, 2014·Medical Science Monitor : International Medical Journal of Experimental and Clinical Research·Alessio Giansiracusa RubiniGianluca Gambarini
Jul 30, 2014·Journal of Endodontics·Gianluca PlotinoGianluca Gambarini
Nov 19, 2013·Journal of Endodontics·Renata Dornelles MorgentalOve A Peters
Sep 20, 2011·Journal of Endodontics·Wei QianMarkus Haapasalo
Apr 27, 2010·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Jeffrey WanAllan S Deutsch
Jun 2, 2009·Dental Materials : Official Publication of the Academy of Dental Materials·Diana N ZeigerSheng Lin-Gibson
Apr 21, 2016·European Journal of Dentistry·Thilla Sekar VinothkumarArunachalam Rajadurai
Sep 4, 2013·International Endodontic Journal·O A PetersF V Vier-Pelisser
Apr 5, 2014·International Endodontic Journal·Y ShenM Haapasalo
Jul 28, 2015·Journal of Endodontics·Isabella Faria da Cunha PeixotoMaria Guiomar de Azevedo Bahia
Oct 27, 2018·Brazilian Oral Research·Giulio GaviniGeorge Táccio de Miranda Candeiro
May 16, 2019·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Gustavo de Cristofaro AlmeidaMaria Guiomar de Azevedo Bahia
Nov 11, 2020·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Eugenio PedullàErnesto Rapisarda
Apr 13, 2013·The Journal of Contemporary Dental Practice·Mina ZareiFarzaneh Afkhami

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