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Fracture and deformation of ProTaper Next instruments after clinical use

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Fracture and deformation of ProTaper Next instruments after clinical use

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dc.contributor.author Fernández-Pazos, Gema es
dc.contributor.author Martín Biedma, Benjamín es
dc.contributor.author Varela Patiño, María Purificación es
dc.contributor.author Ruíz Piñón, Manuel es
dc.contributor.author Castelo Baz, Pablo es
dc.date.accessioned 2019-03-07T11:03:24Z
dc.date.available 2019-03-07T11:03:24Z
dc.date.issued 2018 es
dc.identifier.citation Fernández-Pazos, Gema ; Martín Biedma, Benjamín ; Varela Patiño, María Purificación ; Ruíz Piñón, Manuel ; Castelo Baz, Pablo. Fracture and deformation of ProTaper Next instruments after clinical use. En: Journal of Clinical and Experimental Dentistry, 10 11 2018: 1091-1095 es
dc.identifier.uri http://hdl.handle.net/10550/69403
dc.description.abstract The aim of this study was to evaluate the fracture and defects observed in ProTaper Next files discarded after a normal clinical use. 571 ProTaper Next rotary instruments were collected after clinical use from the clinic of endodontics over 12 months. The length of the files was measured using a digital caliper to determine any fracture, later all the files were evaluated under a stereomicroscope to observe defects such as unwinding, curving or fracture. The data obtained were analyzed using a chi-square and z test. 13.83% of the discarded files showed defects, the most frequent defect was fracture (7.53%). The highest rate of fracture was observed in the X1 (17.04) files (19.87%). The presence of deformations without fracture was also more frequent in the 17.04 file (11.8%). Because of the relatively high incidence of deformation of smaller files, these instruments should be considered as a single use. It is important not to exceed the maximum uses recommended by the manufacturer to reduce the risk of cyclic fatigue, the main cause of fracture of the files (79.07%). It is also important to observe each file after use to discard small defects or fractures. es
dc.title Fracture and deformation of ProTaper Next instruments after clinical use es
dc.type journal article es_ES
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.identifier.doi 10.4317/jced.54910 es
dc.type.hasVersion VoR es_ES

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