2010
DOI: 10.1016/j.joen.2010.02.015
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Effects of Raw Material and Rotational Speed on the Cyclic Fatigue of ProFile Vortex Rotary Instruments

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Cited by 147 publications
(163 citation statements)
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References 25 publications
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“…Reciprocating instrumentation is a new and promising method for the mechanical disinfection of root canals, and as with the M-Wire NiTi alloy, allows the root canal to be prepared with a single instrument. Some studies have evaluated the mechanical effectiveness of these instruments using mechanical tests, 16,17,22,23,24 and have reported the great potential these new concepts have in overcoming the challenges presented during root canal manipulation, such as curvatures. 15,22 However, simplification of endodontic treatment using only one instrument raises concerns about its effectiveness in promoting proper disinfection of the root canal system.…”
Section: Discussionmentioning
confidence: 99%
“…Reciprocating instrumentation is a new and promising method for the mechanical disinfection of root canals, and as with the M-Wire NiTi alloy, allows the root canal to be prepared with a single instrument. Some studies have evaluated the mechanical effectiveness of these instruments using mechanical tests, 16,17,22,23,24 and have reported the great potential these new concepts have in overcoming the challenges presented during root canal manipulation, such as curvatures. 15,22 However, simplification of endodontic treatment using only one instrument raises concerns about its effectiveness in promoting proper disinfection of the root canal system.…”
Section: Discussionmentioning
confidence: 99%
“…The explanation for this may be that heating transforms the metal temporarily into the austenitic phase and makes it SE, which makes it possible for the file to regain its original shape before cooling down again. The properties of the bulk materials are the main determinant of fatigue life (35)(36)(37)(38)(39)(40)(41)(42) (42)(43)(44)(45). The conventional SE NiTi file has an austenite structure (26,(42)(43)(44)(45)(46), whereas NiTi file with thermal processing (eg, TYP CM and Vortex) would essentially be in the martensite condition at body temperature (42,44,45,47).…”
Section: Metallurgical Characterization Of Thermomechanically-treatedmentioning
confidence: 99%
“…Several studies have examined the fatigue resistance of M-Wire NiTi files (38,41,(66)(67)(68). However, the results from these studies cannot easily be compared with one another because of variations in the experimental design and testing model.…”
Section: M-wirementioning
confidence: 99%
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“…Kırık meydana gelmemesinde diğer bir faktör, Reciproc ve WaveOne enstrümanların, çeşitli çalışma-larda enstrümanlara artmış döngüsel yorgunluk direnci sağladığı gösterilen M-Wire NiTi alaşımdan üretilmiş olması olabilir. [29][30][31][32][33][34][35][36] Diğer yandan, bu enstrümanlarla kullanılan saat dönüş yönü ve saat dönüş yönünün tersi yöndeki resiprokasyon hareketinin, enstrümanların kanal içinde vidalanma riskini, maruz kaldıkları sıkışma ve gerilme kuvvetlerini ve döngüsel yorgunluk riskini azaltmış olması da olasıdır.Enstrümanların enine kesit alanları incelendiğinde, ProTaper enstrümanların konveks üçgen, WaveOne enstrümanların konveks üçgen ve modifiye konveks üçgen, Reciproc enstrümanların ise S-şekilli enine-kesite sahip olduğu görülmektedir. Enstrümanların eninekesit alanlarının, torsiyonel kuvvetlere karşı dayanıklılıklarını etkileyen bir faktör olduğu ve enstrü-manların enine kesit alanı arttıkça, dış kuvvetlere direnç gösterme yeteneklerinin arttığı gösterildiğinden, 37,38 ça-lışmamızda ProTaper ve WaveOne enstrümanların, Reciproc enstrümanlara göre daha geniş olan enine kesit alanlarının, bu enstrümanların kırık direncini artırmış olması mümkündür.…”
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