Evaluation of deformation and fracture of three single-file NiTi rotary instruments: ProTaper F2, WaveOne Primary and OneShape in simulated curved canals

Shenouda, Mina A.; Segari, Wafaa Ahmed Omar; Zakhari, Siza Y.

doi:10.5272/jimab.2018242.2014

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Continuous Rotary Motion1

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2020

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“…30 A study by Hamid et al 77 in a student clinic setting found NiTi reciprocating instruments to be superior to hybrid hand/NiTi rotary instruments in the reduction of treatment time, procedural errors and fracture incidence and the improvement of obturation length and taper. Shenouda et al 85 evaluated the fracture resistance of WaveOne Primary, ProTaper Universal F2 and One Shape files. The results show the One Shape file to possess a significantly greater fracture resistance than the WaveOne Primary and ProTaper Universal F2 files.…”

Section: Continuous Rotary Motionmentioning

confidence: 99%

Fracture of endodontic instruments - Part 1: Literature review on factors that influence instrument breakage

2020

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Instrument fracture is a serious complication during endodontic treatment of teeth, having an adverse effect on the outcome of the nickel titanium (NiTi) treatment, especially if the fracture prevents apical access to the infected root canal. Despite the advent of NiTi files, the risk of fracture during the endodontic preparation of root canals, especially in severely curved canals, remains a serious concern. The fracture of NiTi files during preparation may result in a compromised prognosis for the tooth. In the presence of periapical lesions, instrument fracture may reduce the chances of successful healing.

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Section: Continuous Rotary Motionmentioning

confidence: 99%